Question

Calculate the speed of a sound wave whose frequency is 2KHz and wavelength is 65cm.

Answer 1

We know,

Velocity = frequency × lambda

Velocity = 2000 Hz × 65/100m

= 1300 m/s.

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Answer 2

Wavelength = 65cm = 0.65m

Frequency = 2KHz = 2000Hz

Velocity = Wavelength×Frequency

= 0.65×2000 = 1300m/s

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