0
question_answer1) When a light ray is incident normally on the surface of a plane mirror, the reflected ray deviates through an angle of _______.
question_answer2) What is the sum of angle of incidence, angle of reflection and angle of deviation equals to?
question_answer3) If the angle of deviation after reflection of a light ray is d, then find (a) angle of incidence (b) angle of reflection (c) angle of glancing
question_answer4) Keeping the incident ray constant, if a plane mirror is rotated through an angle 0 -> about an axis lying in its plane, then the reflected ray turns through an angle _______.
question_answer5) The angle between an incident ray and reflected ray for a given reflection is x. If the mirror is rotated through an angle x/2, keeping the incident ray constant, then find the angle between incident ray and reflected ray after rotation. Consider both clock wise and anti-clock wise direction.
question_answer6) Keeping the plane mirror fixed, if the incident ray is rotated through an angle \[\theta \] then the angle through which the reflected ray rotates is ______.
question_answer7) A plane mirror lies face up, making an angle \[{{15}^{o}}\] with the horizontal. A ray of light shines down vertically on the mirror What is the angle of incidence? What will be the angle between the reflected ray and the horizontal be?
question_answer8) A snake is approaching a stationary plane mirror with a speed of 5 m/s. Then it observes that its image is approaching it with a speed of (a) 15 m/s (b) 10 m/s (c) 5 m/s (d) 12 m/s
question_answer9) An object is placed between two parallel mirrors then number of images formed is (a) 2 (b) 4 (c) 8 (d) Infinite
question_answer10) A light beam through the slit S is allowed to fall on the mirror which is rotated through an angle of \[{{30}^{o}}\] in the incident plane then (a) Normal rotates with angle of \[{{30}^{o}}\] (b) Reflected ray rotates with an angle of \[{{60}^{o}}\] (c) Incident ray remains fixed (d) Angle of incidence is fixed.
question_answer11) In your study room a plane mirror is fixed to the wall in front of you and opposite to that wall, a wall-clock is hanging in which only marking were there without numbers. You observe the time in the mirror as 7:10 hrs. Then what is the actual time. (a) 4:50 hrs (b) 7:10 hrs (c) 7:50 hrs (d) 5:50 hrs.
question_answer12) A man of 180 cm height stands in front of a plane mirror. His eyes are at a height of 170 cm from floor. Then the minimum length of a plane mirror required for him to see his fall image is (a) 90 cm (b) 180 cm (c) 45cm (d) 360 cm
question_answer13) For a concave mirror when object is placed beyond centre of curvature, an image is formed between principle focus and centre of curvature. The formed image is real inverted and diminished image. When object is placed at centre of curvature. The image is real inverted and of same size as that of object. Now answer the following questions: (a) What is the nature of image formed when object is placed beyond centre of curvature? (a) Real (b) Virtual (c) Both A & B (d) No image is formed (b) An object is placed at centre of curvature of a concave mirror whose radius of curvature is 20 cm. The image is formed from pole at a distance is_______ (a) 10 cm (b) 20 cm (c) 30 cm (d) 15 cm (c) When object is placed at centre of curvature for a concave mirror the image formed is (a) Real inverted of same size (b) Virtual erect of same size (c) Real erect of same size (d) virtual inverted of same size.
question_answer14) Column-I Column-II (a) Focal length of the spherical mirror (i) virtual image (b) Radius of curvature is two times of (ii) Distance between principal focus and pole (c) Plane mirror (iii) Real image (d) Concave mirror (iv) Half radius of Curvature (v) line passing through pole and centre of curvature
question_answer15) The radius of curvature of a concave mirror is 14.26 cm. Its focal length is_____ \[\times {{10}^{-2}}\]cm.
question_answer16) When a ray of light passing from air to medium. Find the following: a) The angle of deviation d is (a) \[{{45}^{o}}\] (b) \[{{0}^{o}}\] (c) \[{{15}^{o}}\] (d) \[{{75}^{o}}\] b) The velocity of light in the medium is (a) \[\sqrt{\frac{3}{2}}\times {{10}^{8}}m/s\] (b) \[\frac{3}{\sqrt{2}}\times {{10}^{8}}m/s\] (c) \[3\times {{10}^{8}}m/s\] (d) \[\sqrt{2}\times {{10}^{8}}m/s\]
question_answer17) What is the focal length of a biconvex lefts whose center of curvature is located at a distance of 20 cm from the optic centre?
question_answer18) (a) An image is formed oft the other side of the lens- Name the type of image. (b) An image is formed on the same side of the lens. Name the type of image.
question_answer19) Converging action of a lens result in ___ type of image. If the refracted rays are divergent, then it results in ___ type of image.
question_answer20) (a) An image of an object by a convex lens is formed at infinity. Name the position of the object and nature of image. (b) The nature of image formed by a convex lens is real, inverted & point diminished. Locate the position of object and image. (c) Name the position and nature of image formed by a convex lens for an object placed between \[{{F}_{1}}\] and \[2{{F}_{1}}\].
question_answer21) (a) A diminished (not point sized) image is formed by convex lens, locate the position of the object. (b) What is the magnification produced by a convex lens for an object placed at \[2{{F}_{1}}\]?
question_answer22) (a) A real image magnification produced by a lens is greater than 1. Predict the position of the object. (b) A virtual image magnification produced by a lens is greater than 1. Predict the position of the object. (c) Only virtual images are formed by __lens. (d) The position of the object for a concave lens is anywhere between O to infinity. What is the nature of the image? (e) A lens can form both real and virtual images. Name the type of lens.
question_answer23) (a) The images formed by a lens is always on the 4 same side of the lens as object. Name the type of lens. (b) A real image and magnified image is formed by a lens. If the object distance is u and image distance is v, then find the distance between object and image. (c) An image formed by a concave lens. If the object distance is u and image distance is v, then find the distance between object and 4 < image. (d) A virtual image is formed by a converging type of lens. If the object distance is u and image distance is v, then find the distance between object and image.
question_answer24) (a) Which type of lens is a converging lefts? (b) Which type of lefts is a diverging lefts?
question_answer25) Part of eye Function i Iris a Controls the amount of light entering into the eye ii Cilliary muscle b Senses the real image iii Pupil c Controls the power of eye lens iv Retina d Controls the size of pupil The alternatives in the given table can be correctly matched as (a) \[i\to a,ii\to c,iii\to b,iv\to d\] (b) \[i\to a,ii\to b,iii\to c,iv\to d\] (c) \[i\to d,ii\to c,iii\to a,iv\to b\] (d) \[i\to d,ii\to c,iii\to b,iv\to a\]
question_answer26) Match the following: Column-I Column-II (a) Plane of reflection (i) The plane containing the reflected ray and normal (b) Angle of deviation (ii) The angle made by incident ray with the mirror (c) Glancing angle (iii) Angle through which a ray deviates from its normal path (d) Normal (iv) perpendicular drawn to the surface at the point of incidence (v) The angle made by reflected ray with the mirror
question_answer27) The angle of inclination between two mirrors is Column-I Column-II (a) \[{{90}^{o}}\] (i) No. of images is one (b) \[{{60}^{o}}\] (ii) No. of images are three (c) \[{{45}^{o}}\] (iii) No. of images are five (d) \[{{0}^{o}}\] (iv) No. of images are seven (v) No. of images are infinite
question_answer28) Column-I Column-II (a) Point of incidence (i) Ray of light which strik the transparent surface at the point of incidence (b) Angle of incidence (ii) Ray of light which travels from the point of incident into the other medium (c) Incident ray (iii) It is represented by the symbol i (d) Refracted ray (iv) Angle between the incident ray and the normal on the transparent surface at the point of incidence (v) Point on transparent surface, where the ray of light meets
Please Wait you are being redirected....
You need to login to perform this action.You will be redirected in 3 sec
OTP has been sent to your mobile number and is valid for one hour
Your mobile number is verified.
