Electromagnetic Waves Quiz Questions and Answers - 1

Question: 1

_____ is used to preserve food items.

(A) Radiowaves

(B) uv-rays

(C) gamma rays

(D) X-rays

Ans: B

uv-rays

Question: 2

The energy of electromagnetic waves in due to _____ energy of the oscillating charge.

(A) rotational

(B) vibrational

(C) potential

(D) kinetic

Ans: D

kinetic

Question: 3

Electromagnetic waves are produced by

(A) accelerated charges

(B) molecules of hot bodies

(C) electronic device

(D) atoms and molecules in an electrical discharge

Ans: A

accelerated charges

Question: 4

The instrument to determine the optical rotation produced by a substance is

(A) pyroheliometer

(B) polarimeter

(C) spectrometer

(D) polometer

Ans: B

polarimeter

Question: 5

_____ is used as sun glasses.

(A) Polaroids

(B) Pile of plates

(C) Nicol prism

(D) None of the above

Ans: A

Polaroids

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