The electromagnetic waves used in radar are MCQ with Answer and Explanation

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The electromagnetic waves used in radar are

A. Infrared

B. Ultraviolet

C. Microwaves

D. Radio waves

Answer: Option C

Solution (By JKSSB Mock Tests)

RADAR uses microwaves (short wavelength radio waves). Often classified as microwaves.

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Practice More Physics Questions

Question #1

The scientist who gave the law of inertia was

A. Newton

B. Kepler

C. Galileo

D. Copernicus

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Correct Answer: Option C

Explanation:
Galileo first proposed concept of inertia. Newton formalized.

This question belongs to: Science Physics

Question #2

The SI unit of electric charge is

A. Volt

B. Coulomb

C. Ampere

D. Ohm

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Correct Answer: Option B

Explanation:
Coulomb (C) is SI unit of charge. Ampere is unit of current (C/s). Volt is potential difference, ohm is resistance. One coulomb is charge transported by 1 A current in 1 s.

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Question #3

The part of human eye that controls amount of light entering is

A. Retina

B. Cornea

C. Iris

D. Lens

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Correct Answer: Option C

Explanation:
Iris adjusts pupil size. In bright light pupil constricts, dim light dilates. Retina forms image. Cornea and lens focus. Eye is like camera.

This question belongs to: Science Physics

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