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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