Light MCQ question and answer with solution

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Each section contains 100 MCQs on Light .

Which of the following does not contribute to the sparking of diamonds?

A) Total internal reflection B) High refractive index of diamond C) Dispersion D) Low refractive index of diamond

Discuss

Answer & Solution

Answer: Option D

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

If the focal length of a convex lens is 50 cm, then which one of the following is its power?

A) +2 D B) +0.02 D C) -0.5 D D) +0.5 D

Discuss

Answer & Solution

Answer: Option A

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

Which of these travels in glass with minimum velocity?

A) red light B) violet light C) green light D) yellow light

Discuss

Answer & Solution

Answer: Option B

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

. . . . . . . . is not an example of refraction of light.

A) Twinkling effect of stars B) Mirages C) Lateral inversion D) Bending of light while passing through a medium

Discuss

Answer & Solution

Answer: Option C

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

Which one of the following is used for sunglasses?

A) Pyrex glass B) Flint glass C) Crooks glass D) Crystal glass

Discuss

Answer & Solution

Answer: Option C

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

Red + Green + Blue = ?

A) White B) Black C) Maroon D) Blue

Discuss

Answer & Solution

Answer: Option A

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

The speed of light will be minimum: while passing through

A) Glass B) Vacuum C) Water D) Air

Discuss

Answer & Solution

Answer: Option A

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

How long does light take to reach the earth from the sun?

A) About 4 min B) About 8 min C) About 24 min D) About 24 h

Discuss

Answer & Solution

Answer: Option B

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

Which of the following is not caused by atmospheric refraction of light?

A) Twinkling of stars at night B) Sun appearing higher in the sky than it is actually C) Sun becoming visible two or three minutes before actual sunrise D) Sun appearing red at sunset

Discuss

Answer & Solution

Answer: Option D

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

Which of the following is not a colour created from a combination of two primary colours ?

A) Orange B) Green C) Violet D) Blue

Discuss

Answer & Solution

Answer: Option D

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