Light MCQ question and answer with solution

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Each section contains 100 MCQs on Light .

The magnifying power of an astronomical telescope can be decreased by

A) decreasing the focal length of the eyepiece B) increasing the focal length of the eyepiece C) increasing the focal length of the objective D) None of the above

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

A man cannot see clearly beyond 10 m. The disease he suffers from

A) far sight B) myopia C) cataract D) hypermetropia

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

The speed of light in a medium whose refractive index 1.5 is . . . . . . . .

A) 3.0 × 10⁸ m/s B) 2.0 × 10⁸ m/s C) 1.5 × 10⁸ m/s D) 1.2 × 10⁸ m/s

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

A mirage occurs because of

A) reflection by hot ground B) total internal reflection by layers of air C) interference of light D) diffraction of light

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

A simple microscope consists of a

A) short focus convex lens B) long focus convex lens C) short focus concave lens D) long focus concave lens

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Which of the following can produce a virtual image larger than the object?

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

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

The light energy escaping from the sun can be spread by

A) a shower of rain drops B) a plane mirror C) a convex lens D) a combination of a convex lens and a concave lens

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Objects that produce their own light, are called-

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

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

When an object is placed at the center of curvature of a circular concave mirror, what will be the position of image formed by that concave mirror?

A) between infinity and center of curvature B) focus C) At center of curvature D) at infinity

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

100

What is the colour of the light emitted by the Sun?

A) White B) Red C) Yellow D) Orange

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

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Light MCQ question and answer with solution | Physics Gk MCQs