Question

A sound wave travels at a speed of 330 ms-1. If its wavelength is 1.5 cm, what is the frequency of the

wave?

1) 22600 sec–1 2) 2600 sec–1 3) 33600 sec–1 4) 3000 sec–1​

Answer 1

Answer:

Frequency of the wave is 220 Hz.

Explanation:

Given :-

Speed of sound = 330 m/s

Wavelength = 1.5 cm

To find :-

Frequency of the wave.

Solution :-

From relation,

• V = fλ

Where,

• V - Speed of sound
• f - frequency
• λ - wavelength

Substituting,

• 330 = f × 1.5
• f = 330/1.5
• f = 220

∴ Frequency of the wave is 220 Hz.

Answer 2

Answer:

Therefore υ=υ/λ=339/0.015=22600 Hz.

Explanation:

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