# 10th Class Physics Light - Reflection and Refraction Question Bank

### done Light - Reflection and Refraction

• A) $\text{2}0{}^\circ$

B) $\text{4}0{}^\circ$

C) $\text{7}0{}^\circ$

D) $\text{9}0{}^\circ$

• A) P

B) Q

C) R

D) S

• A) $\text{22}.\text{6}{}^\circ$

B) $\text{23}.\text{1}{}^\circ$

C) $\text{39}.0{}^\circ$

D) $\text{4}0.\text{5}{}^\circ$

• A) 10cm

B) 15cm

C) 20 cm

D) 25 cm

• A) $\text{22}.\text{6}{}^\circ$

B) $\text{3}0.\text{8}{}^\circ$

C) $\text{35}.\text{3}{}^\circ$

D) $\text{4}0.0{}^\circ$

• A)

 Incident ray Refracted ray Emergent ray PQ QR RS

B)

 Incident ray Refracted ray Emergent ray PQ RS QR

C)

 Incident ray Refracted ray Emergent ray RS QR PQ

D)

 Incident ray Refracted ray Emergent ray RS PQ QR

• A) 1.2

B) 1.3

C) 1.4

D) 1.5

• A) Medium 1, medium 2, medium 3

B) Medium 2, medium 3, medium 1

C) Medium 3, medium 1, medium 2

D) Medium 1, medium 3, medium 2

• A) P

B) S

C) Q

D) R

• A) P

B) S

C) R

D) Q

• A) The distance from the light source to the image

B) The distance from the object to the centre of the lens

C) The distance from the image to the centre of the lens

D) The distance from the focal point to the centre of the lens

•  (i) The principal focus of a converging lens is real. (ii) The principal focus of a diverging lens is virtual. (iii) The principal focus of a lens always lies on the principal axis.

A) Only (i) and (ii)

B) Only (ii) and (iii)

C) Only (i) and (iii)

D) (i), (ii) and (iii)

• A) The image distance obtained from a far away object is the focal length of the convex lens.

B) The images obtained from a convex lens always lie on the focal point.

C) The images obtained by a convex lens are always real.

D) The images obtained by a convex lens are always inverted.

• A) Real, inverted and diminished

B) Real, inverted and enlarged

C) Virtual, inverted and diminished

D) Virtual, upright and enlarged

• A) Real, inverted and diminished

B) Real, inverted and enlarged

C) Virtual, upright and enlarged

D) No image is formed

• A) Real, inverted and diminished

B) Real, inverted and of the same size as the object

C) Real, inverted and enlarged

D) Virtual, upright and enlarged

• A) P

B) Q

C) R

D) S

• A) Q

B) R

C) P

D) S

• A) Real, inverted and diminished

B) Real, inverted and of the same size as the object

C) Real, inverted and enlarged

D) Virtual, upright and enlarged

• A) On the left side, 30 cm, real, inverted and magnified

B) On the left side, 20 cm, virtual, upright and diminished

C) On the right side, 30 cm, real, inverted and magnified

D) On the right side, 20 cm, virtual, up- right and diminished

• A) 10 cm

B) 15 cm

C) 25 cm

D) None of the above

•  (i) The angle of incidence is$0{}^\circ$. (ii) The two media have the same refractive index. (iii) The refractive index is higher than 3.0.

A) Only (i) and (ii)

B) Only (ii) and (iii)

C) Only (i) and (iii)

D) (i), (ii) and (iii)

• A) Refractive index of the material for making the lens

B) Material of the lens

C) Object distance

D) Thickness of the lens

• A) 10 cm

B) 12 cm

C) 15 cm

D) 18cm

• A) Wavelength

B) Speed

C) Frequency

D) Both (a) and (b)

• A) 5 cm

B) 25 cm

C) 40cm

D) 100cm

• A) 5 cm

B) 10 cm

C) 15 cm

D) 25 cm

• A) 24 cm

B) 12 cm

C) 6 cm

D) 18 cm

• A) In convex mirror at infinity

B) In concave mirror between F and P

C) In plane mirror at all positions

D) All the above

• A) Equal to f

B) Between f and 2 f

C) Equal to 2 f

D) Greater than 2 f

• A) t will pass through the pole.

B) It will pass through the centre of curvature.

C) It will pass through the focus.

D) It will retrace its path.

• A) f

B) 2f

C) 4f

D) Zero

• A) A convex mirror

B) A concave mirror

C) Either a convex or a concave mirror

D) A plane mirror

• A) It will pass through the pole of the mirror.

B) It will pass through the focus of the mirror.

C) It will retrace its path.

D) It will be parallel to the principal axis.

• A) Plane mirror

B) Convex mirror

C) Concave mirror

D) Convexo-Concave mirror

• A) At infinity

B) At the focus of the lens

C) At twice its focal length

D) Between f and the lens

• A) At zero

B) At infinity

C) At a distance of 2f

D) At a distance f/2

• A) A convex mirror

B) A concave mirror

C) A convex lens

D) Bi-convex lens

• A) Its velocity increases.

B) Its velocity decreases.

C) Its frequency decreases.

D) Its wavelength increases.

• A) Concave mirror

B) Convex mirror

C) Cylindrical mirror

D) Parabolic mirror

• A) A plane mirror

B) A concave mirror

C) A convex mirror

D) All of the above

• A) The real image of the sun

B) The virtual image of the sun

C) An optical illusion produced by the convex lens

D) The magnified image of the sun

• A) A medium with larger refractive index is optically denser than a medium with smaller refractive index.

B) The speed of light is less in a rarer medium than a denser medium.

C) Refraction is due to the change in speed of light as it enters from one medium to another.

D) The absolute refractive index of a medium is simply called its refractive index.

• A) $\text{3}0{}^\circ$

B) $\text{6}0{}^\circ$

C) $\text{9}0{}^\circ$

D) $\text{12}0{}^\circ$

• A) The focal length is positive.

B) The object distance can be positive or negative.

C) The height of the image can be positive or negative.

D) Image distance is always negative.

• A) Plane mirror

B) Concave lens

C) Convex lens

D) All of the above

• A) A convex lens of focal length 50 cm.

B) A concave lens of focal length 50 cm.

C) A convex lens of focal length 5 cm.

D) A concave lens of focal length 5 cm.

• A) $\text{3}0.\text{7}{}^\circ$

B) $\text{35}.\text{3}{}^\circ$

C) $\text{41}.\text{7}{}^\circ$

D) $\text{48}.\text{6}{}^\circ$

• A) R

B) P

C) Q

D) S

• A) ${{E}_{1}}$
B) ${{E}_{2}}$
C) ${{E}_{3}}$
D) ${{E}_{4}}$