Light MCQ question and answer with solution

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Each section contains 100 MCQs on Light .

The outside rear view mirror of modern automobiles is marked with warning 'objects in mirror are closer than they appear'. Such mirrors are

A) plane mirrors B) concave mirrors with very large focal lengths C) concave mirrors with very small focal lengths D) convex mirrors

Discuss

Answer & Solution

Answer: Option D

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

Light waves are . . . . . . . .

A) electric waves B) magnetic waves C) electromagnetic waves D) No option is correct

Discuss

Answer & Solution

Answer: Option C

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

The generating images on a screen by focusing an electronic beam on phosphorus coated screen is called

A) Master Scan B) Total Scan C) Roster Scan D) Radar Scan

Discuss

Answer & Solution

Answer: Option C

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

The minimum height of a plane mirror to see the full size image of a person is equal to

A) The height of the person B) Half the height of the person C) One-fourth the height of the person D) Double the height of the person

Discuss

Answer & Solution

Answer: Option B

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

Which of the following colors of white light has the highest wavelength?

A) purple B) orange C) red D) green

Discuss

Answer & Solution

Answer: Option C

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

Shaving mirror is

A) convex B) concave C) plane D) parabolic

Discuss

Answer & Solution

Answer: Option B

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

A rear-view mirror for driving is

A) plane B) concave C) convex D) inverted

Discuss

Answer & Solution

Answer: Option C

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

We see the color of grass as green because-

A) It reflects green colored light back to our eyes B) It absorbs green light C) It reflects all light except green D) It reflects white light on our eyes

Discuss

Answer & Solution

Answer: Option A

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

Which of the following waves can not be polarised?

A) Radio B) Ultra violet C) Infrared D) Ultrasonic

Discuss

Answer & Solution

Answer: Option D

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

Velocity of light is maximum in

A) Diamond B) Water C) Vacuum D) Hydrogen

Discuss

Answer & Solution

Answer: Option C

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