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
Microwaves
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
Zero
Question: 4
Sound waves in air are ___ waves.
(A) Electromagnetic
(B) Transverse
(C) Radio
(D) Longitudinal
Ans: D
Longitudinal
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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