Light MCQ question and answer with solution

71

When light passes from one medium to another, this phenomenon of change in its direction is called . . . . . . . .

A) Refraction B) Diffraction C) Propagation D) No option is correct

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Answer & Solution

Answer: Option A

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72

Which of the following is not a example of refraction of light?

A) Formation of rainbow B) Twinkling of stars C) Image formation by human eye D) Red colour of setting sun

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Answer: Option D

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73

If an object is placed at the center of curvature of a concave mirror, its image will be such that-

A) Virtual and large size B) real and same size C) Virtual and small size D) real and large size

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Answer: Option B

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74

An object is placed in front of a convex mirror. Which one of the following statement is correct?

A) It will never form an inverted image B) The image moves towards the focus when the object moves towards the mirror C) Depending on the position of the object with respect to the mirror, the image can be inverted and real D) The size of the image becomes larger than that of the object when the object is placed at a distance equal to half the focal length

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Answer: Option A

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75

When an object is placed at infinity in front of a concave mirror, its image is at-

A) focus B) between focus (F) and center (C) C) Center (C) D) away from center (C)

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Answer: Option A

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76

The objects that themselves do not produce light is called-

A) transparent objects B) translucent objects C) non-luminous objects D) luminous objects

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Answer: Option C

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77

The ratio of the height of image to the height of the object is called-

A) Lateral inersion B) Mirror formula C) First law of reflection D) Linear magnification

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Answer: Option D

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78

The region where all of the light from the source is blocked is called:

A) Penumbra B) Umbra C) Antumbra D) Shadow

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Answer: Option B

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79

The shape of the image produced by a converging mirror when an object is placed at the main focus, it happens . . . . . . . . .

A) as points B) of similar size C) foggy D) highly magnified

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Answer: Option D

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80

Myopia is the same as

A) near sightedness B) astigmatism C) presbyopia D) long-sightedness

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Answer: Option A

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Light MCQ question and answer with solution | Physics Gk MCQs