JEE Main & Advanced Physics Ray Optics Question Bank

done Assertion and Reason Total Questions - 47

• question_answer1)
  Assertion             :       A red object appears dark in the yellow light Reason                 :   A red colour is scattered less [AIIMS 2004]
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer2)
  Assertion             :       The stars twinkle while the planets do not. Reason                 :       The stars are much bigger in size than the planets.                                                                      [AIIMS 2003]
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer3)
  Assertion             :       Owls can move freely during night. Reason                 :   They have large number of rods on their retina.            [AIIMS 2003]
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer4)
  Assertion             :       The air bubble shines in water. Reason                 :   Air bubble in water shines due to refraction of light     [AIIMS 2002]
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer5)
  Assertion             :       In a movie, ordinarily 24 frames are projected per second from one end to the other of the complete film. Reason                 :   The image formed on retina of eye is sustained upto 1/10 second after the removal of stimulus. [AIIMS 2001]
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer6)
  Assertion             :       Blue colour of sky appears due to scattering of blue colour. Reason                 :   Blue colour has shortest wave length in visible spectrum.         [AIIMS 2001]
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer7)
  Assertion             :       The refractive index of diamond is \[\sqrt{6}\] and that of liquid is \[\sqrt{3}\]. If the light travels from diamond to the liquid, it will totally reflected when the angle of incidence is 30o. Reason                 :   \[\mu =\frac{1}{\sin C},\] where m is the refractive index of diamond with respect to liquid.  [AIIMS 2000]
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer8)
  Assertion             :       The setting sun appears to be red. Reason                 :   Scattering of light is directly proportional to the wavelength.   [AIIMS 2000]
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer9)
  Assertion             :       A double convex lens (m = 1.5) has focal length 10 cm. When the lens is immersed in water (m = 4/3) its focal length becomes 40 cm. Reason                 :   \[\frac{1}{f}=\frac{{{\mu }_{l}}-{{\mu }_{m}}}{{{\mu }_{m}}}\,\left( \frac{1}{{{R}_{1}}}-\frac{1}{{{R}_{2}}} \right)\]               [AIIMS 1999]
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer10)
  Assertion             :       Different colours travel with different speed in vacuum. Reason                 :   Wavelength of light depends on refractive index of medium. [AIIMS 1998]
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer11)
  Assertion             :       The colour of the green flower seen through red glass appears to be dark. Reason                 :   Red glass transmits only red light.  [AIIMS 1997]
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer12)
  Assertion             :       The focal length of the mirror is f and distance of the object from the focus is u, the magnification of the mirror is f / u. Reason                 :   Magnification \[=\frac{\text{Size of image}}{\text{Size of object}}\]    [AIIMS 1994]
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer13)
  Assertion             :       If a plane glass slab is placed on the letters of different colours all the letters appear to be raised up to the same height. Reason                 :   Different colours have different wavelengths.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer14)
  Assertion             :       The fluorescent tube is considered better than an electric bulb. Reason                 :   Efficiency of fluorescent tube is more than the efficiency of electric bulb.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer15)
  Assertion             :       The polar caps of earth are cold in comparison to equatorial plane. Reason                 :   The radiation absorbed by polar caps is less than the radiation absorbed by equatorial plane.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer16)
    Assertion             :       The illumination of earth's surface from sun is more at noon than in the morning. Reason                 :   Luminance of a surface refers to brightness of the surface.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer17)
  Assertion             :       When an object is placed between two plane parallel mirrors, then all the images found are of equal intensity. Reason                 :   In case of plane parallel mirrors, only two images are possible.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer18)
  Assertion             :       The mirrors used in search lights are parabolic and not concave spherical. Reason                 :   In a concave spherical mirror the image formed is always virtual.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer19)
  Assertion             :       The size of the mirror affect the nature of the image. Reason                 :   Small mirrors always forms a virtual image.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer20)
  Assertion             :       Just before setting, the sun may appear to be elliptical. This happens due to refraction. Reason                 :   Refraction of light ray through the atmosphere may cause different magnification in mutually perpendicular directions.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer21)
  Assertion             :       Critical angle of light passing from glass to air is minimum for violet colour. Reason                 :   The wavelength of blue light is greater than the light of other colours.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer22)
  Assertion             :       We cannot produce a real image by plane or convex mirrors under any circumstances. Reason                 :   The focal length of a convex mirror is always taken as positive.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer23)
  Assertion             :       A piece of red glass is heated till it glows in dark. The colour of glowing glass would be orange. Reason                 :   Red and orange is complementary colours.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer24)
  Assertion             :       Within a glass slab, a double convex air bubble is formed. This air bubble behaves like a converging lens. Reason                 :   Refractive index of air is more than the refractive index of glass.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer25)
  Assertion             :       The images formed by total internal reflections are much brighter than those formed by mirrors or lenses. Reason                 :   There is no loss of intensity in total internal reflection.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer26)
  Assertion             :       The focal length of lens does not change when red light is replaced by blue light. Reason                 :   The focal length of lens does not depends on colour of light used.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer27)
  Assertion             :       There is no dispersion of light refracted through a rectangular glass slab. Reason                 :   Dispersion of light is the phenomenon of splitting of a beam of white light into its constituent colours.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer28)
  Assertion             :       All the materials always have the same colour, whether viewed by reflected light or through transmitted light. Reason                 :   The colour of material does not depend on nature of light.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer29)
  Assertion             :       A beam of white light gives a spectrum on passing through a hollow prism. Reason                 :   Speed of light outside the prism is different from the speed of light inside the prism.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer30)
  Assertion             :       By increasing the diameter of the objective of telescope, we can increase its range. Reason                 :   The range of a telescope tells us how far away a star of some standard brightness can be spotted by telescope.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer31)
  Assertion             :       For the sensitivity of a camera, its aperture should be reduced. Reason                 :   Smaller the aperture, image focussing is also sharp.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer32)
  Assertion             :       If objective and eye lenses of a microscope are interchanged then it can work as telescope. Reason                 :   The objective of telescope has small focal length.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer33)
  Assertion             :       The illuminance of an image produced by a convex lens is greater in the middle and less towards the edges. Reason                 :   The middle part of image is formed by undeflected rays while outer part by inclined rays.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer34)
  Assertion             :       Although the surfaces of a goggle lens are curved, it does not have any power. Reason                 :   In case of goggles, both the curved surfaces have equal radii of curvature.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer35)
  Assertion             :       The resolving power of an electron microscope is higher than that of an optical microscope. Reason                 :   The wavelength of electron is more than the wavelength of visible light.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer36)
  Assertion             :       If the angles of the base of the prism are equal, then in the position of minimum deviation, the refracted ray will pass parallel to the base of prism. Reason                 :   In the case of minimum deviation, the angle of incidence is equal to the angle of emergence.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer37)
  Assertion             :       Dispersion of light occurs because velocity of light in a material depends upon its colour. Reason                 :   The dispersive power depends only upon the material of the prism, not upon the refracting angle of the prism.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer38)
  Assertion             :       An empty test tube dipped into water in a beaker appears silver, when viewed from a suitable direction. Reason                 :   Due to refraction of light, the substance in water appears silvery.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer39)
  Assertion             :       Spherical aberration occur in lenses of larger aperture. Reason                 :   The two rays, paraxial and marginal rays focus at different points.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer40)
  Assertion             :       It is impossible to photograph a virtual image. Reason                 :   The rays which appear diverging from a virtual image fall on the camera and a real image is captured.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer41)
  Assertion             :       The speed of light in a rarer medium is greater than that in a denser medium  Reason                 :   One light year equals to 9.5 × 1012 km [AIIMS 1999]
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer42)
  Assertion             :       The frequencies of incident, reflected and refracted beam of monochromatic light incident from one medium to another are same Reason                 :   The incident, reflected and refracted rays are coplanar              [EAMCET (Engg.) 2000]
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
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• question_answer43)
  Assertion             :       The refractive index of a prism depends only on the kind of glass of which it is made of and the colour of light Reason                 :   The refractive index of a prism depends upon the refracting angle of the prism and the angle of minimum deviation             [AIIMS 2000]
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
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• question_answer44)
  Assertion             :       The resolving power of a telescope is more if the diameter of the objective lens is more. Reason                 :   Objective lens of large diameter collects more light.    [AIIMS 2005]
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
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• question_answer45)
  Assertion             :       By roughening the surface of a glass sheet its transparency can be reduced. Reason                 :   Glass sheet with rough surface absorbs more light.      [AIIMS 2005]
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
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• question_answer46)
  Assertion             :       Diamond glitters brilliantly. Reason                 :   Diamond does not absorb sunlight. [AIIMS 2005]
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
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• question_answer47)
  Assertion             :       The cloud in sky generally appear to be whitish. Reason                 :   Diffraction due to cloud is efficient in equal measure at all wavelengths. [AIIMS 2005]
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
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