Light MCQ question and answer with solution

1

Assertion (A) There is no dispersion of light refracted through a rectangular glass slab.
Reason (R) Dispersion of light is the phenomenon of splitting of a beam of white light into its constituent colours.

A) Both A and R are true and R is the correct explanation of A B) Both A and R are true, but R is not the correct explanation of A C) A is true, but R is false D) A is false, but R is true

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Answer & Solution

Answer: Option B

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2

For normal eyes what is the minimum distance for clear vision?

A) 10 cm B) 15 cm C) 20 cm D) 25 cm

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Answer & Solution

Answer: Option D

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3

The magnifying glass is

A) convex lens B) convex mirror C) concave lens D) concave mirror

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Answer & Solution

Answer: Option A

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4

What will be the size of image formed by a concave mirror when an object placed between pole and focus?

A) Same Size B) Enlarged C) Point Size D) Diminished

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Answer & Solution

Answer: Option B

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5

Which of the following statement is true?

A) The light has a greater velocity B) The sound has the greatest velocity C) Celestial objects have the greatest velocity D) Rocket has the greatest velocity

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Answer & Solution

Answer: Option A

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6

When light waves pass from air to glass the variable affected are

A) Wavelength, frequency and velocity B) Velocity and frequency C) Wavelength and frequency D) Wavelength and velocity

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Answer & Solution

Answer: Option D

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7

The centre of the reflecting surface of a spherical mirror is called the

A) pole B) radius C) centre of curvature D) focus

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Answer & Solution

Answer: Option A

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8

A spoon which looks bent in water is an example of which of the following?

A) reflection B) refraction C) retention D) focus

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Answer & Solution

Answer: Option B

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9

Which of the following types of the mirror is used to see the traffic behind the car?

A) Convex mirror B) Concave mirror C) Plane mirror D) Spherical mirror

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Answer & Solution

Answer: Option A

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10

Which of the following is used to take 3-dimensional pictures?

A) Photography B) Holography C) Radiography D) None of these

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Answer & Solution

Answer: Option B

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Light MCQ question and answer with solution | Physics Gk MCQs