TNPSC Group 1 Study Material in Tamil and English - 1

Question: 1

Which of the following is used in oven?

(A) Radio waves

(B) Microwaves

(C) UV-rays

(D) X-rays

Ans: B


Question: 2

Echo is produced due to

(A) Resonance

(B) Refraction of sound

(C) Reflection of sound

(D) None of the above

Ans: C

Reflection of sound

Question: 3

The rest mass of a photon is

(A) Dependent on velocity

(B) Zero

(C) Very small

(D) Very large

Ans: B


Question: 4

Sound waves in air are ___ waves.

(A) Electromagnetic

(B) Transverse

(C) Radio

(D) Longitudinal

Ans: D


Question: 5

Which of the following type of waves is different from others?

(A) Sound waves

(B) Radio waves

(C) X-rays

(D) Light waves

Ans: A

Sound waves

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