Light MCQ question and answer with solution

1

To an astronaut in space, the sky will appear to be

A) violet B) red C) blue D) black

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Answer & Solution

Answer: Option D

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2

What is the absolute refractive index of air?

A) 1.03 B) 1.00003 C) 1.003 D) 1.0003

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Answer & Solution

Answer: Option D

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3

Light is a transverse wave, which of the only event proving this?

A) dispersion of light B) interference C) diffusion D) polarization

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Answer & Solution

Answer: Option D

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4

Near-sightedness in humans is called:

A) Myopia B) Hypermetropia C) Cataract D) Presbyopia

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Answer & Solution

Answer: Option A

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5

Which one of the following is not a luminous object?

A) Sun B) Electric lamp C) Candle D) Moon

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Answer & Solution

Answer: Option D

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6

In a concave mirror when the object is placed at infinity which of the following applies to the image?

A) Real, inverted image of the same size at centre of curvature B) Real, inverted, highly diminished image at focus C) Real, inverted highly enlarged image at centre of curvature D) Real, inverted, diminished image between centre of curvature (c) and principal focus (F)

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Answer & Solution

Answer: Option B

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7

What is the distance between the focal point or focus point in the lens and the vision center or optical center?

A) radius of curvature B) principal line C) focal length D) focus

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Answer & Solution

Answer: Option C

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8

Rainbow is seen after rain because of hanging molecules of water which act as

A) lenses B) prism C) mirrors D) slabs

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Answer & Solution

Answer: Option B

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9

Match List-I with List-II and select the correct answer:

List-I (Disease)	List-II (Remedy)
a. Hypermetropia	1. Concave lens
b. Presbyopia	2. Bifocal lens
c. Myopia	3. Surgery
d. Cataract	4. Convex lens

A) a-4, b-2, c-1, d-3 B) a-4, b-1, c-2, d-3 C) a-3, b-1, c-2, d-4 D) a-3, b-2, c-1, d-4

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Answer & Solution

Answer: Option A

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10

The correct relation between the radius of curvature R and focal length f of a spherical mirror is

A) R = f B) R = 2f C) R = 3f D) R = 4f

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Answer & Solution

Answer: Option B

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Light MCQ question and answer with solution | Physics Gk MCQs