Light MCQ question and answer with solution

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Each section contains 100 MCQs on Light .

The technique used to transmit auto signals in television broadcasts is

A) Amplitude Modulation B) Frequency Modulation C) Pulse Code Modulation D) Time Division Multiplexing

Discuss

Answer & Solution

Answer: Option B

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

The head mirror used by ENT doctors is

A) concave B) convex C) plane D) plano-convex

Discuss

Answer & Solution

Answer: Option A

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

If the radius of curvature of a concave mirror is 6.2 cm, then its focal length will be . . . . . . . . cm.

A) 12.4 B) 2.6 C) 3.1 D) 6

Discuss

Answer & Solution

Answer: Option C

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

Which one of the following statement is not true for a person suffering from hypermetropia?

A) The person can see far objects distinctly B) The focal length of the lens is large C) The image of the close objects is focused behind the retina D) A concave lens is used to correct this defect

Discuss

Answer & Solution

Answer: Option D

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

When light enters the rarer medium through a denser medium, what is the effect on its speed?

A) increases B) decreases and then increases C) there is no change D) decreases

Discuss

Answer & Solution

Answer: Option A

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

Person who is colourblind can not distinguish between

A) Black and yellow B) Red and green C) Yellow and white D) Green and blue

Discuss

Answer & Solution

Answer: Option B

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

According to law of reflection

A) Angle of incidence is greater than angle of reflection B) Angle of incidence is smaller than angle of reflection C) Angle of incidence is always equal to angle of reflection D) Both angles are always unequal

Discuss

Answer & Solution

Answer: Option C

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

When light is incident on a bright surface, . . . . . . . . phenomenon of reflection occurs.

A) irregular B) diffused C) regular D) normal

Discuss

Answer & Solution

Answer: Option C

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

Optical fibres are based on the phenomenon of

A) interference B) dispersion C) diffraction D) total internal reflection

Discuss

Answer & Solution

Answer: Option D

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

Focal length of concave lens . . . . . . . . it occurs

A) zero B) negative C) infinite D) positive

Discuss

Answer & Solution

Answer: Option B

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