Which of the following is a mechanical wave?
(a) Radio waves
(b) X-rays
(c) Light waves
(d) Sound waves.

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Solution

(d) Sound waves

There are mainly two types of waves: first is electromagnetic wave, which does not require any medium to travel, and the second is the mechanical wave, which requires a medium to travel. Sound requires medium to travel, hence it is a mechanical wave.

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Properties of a kind of wave are given below. Identify the type of wave

i. Wave can not be detected by human ear

ii. Velocity of wave in free space is 3x10⁸m/s

iii. Velocity is not effected by temperature

iv. Waves can travel through vacuum

Match the following

1. Sound waves (i) Mechanical wave

2. Light waves (ii) Non-mechanical waves

3. Waves on a string (iii) Transverse waves

(iv) Longitudinal waves

Q. Match the following :

PART-A	PART-B
a) Polarisation	e) All types of waves
b) interference	f) longitudinal waves
c) diffraction	g) transverse waves
d) reflection	h) only with transverse waves
	i) stationary waves produced in stretched strings

Sound wave is a mechanical wave, which means, unlike light, it needs a medium for propagation.

Sound wave is a mechanical wave, which means, unlike light, it needs a medium to travel.

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Which of the following is a mechanical wave? (a) Radio waves (b) X-rays (c) Light waves (d) Sound waves.

(d) Sound waves There are mainly two types of waves: first is electromagnetic wave, which does not require any medium to travel, and the second is the mechanical wave, which requires a medium to travel. Sound requires medium to travel, hence it is a mechanical wave.

Which of the following is a mechanical wave?
(a) Radio waves
(b) X-rays
(c) Light waves
(d) Sound waves.

(d) Sound waves

There are mainly two types of waves: first is electromagnetic wave, which does not require any medium to travel, and the second is the mechanical wave, which requires a medium to travel. Sound requires medium to travel, hence it is a mechanical wave.