Question

Calculate the velocity of a wave if the distance between two crests is 30cm and frequency is 450hz

Answer 1

Wave length = 30 cm = 0.30 m
$frequency \: = \: 450 \: hertz \: = \: 450 {s}^{ - 1}$
Velocity = wave length * frequency
= 0.30*450 = 135 m/s = Answer

Answer 2

Given that,

The distance between two crest is 30 cm or 0.3 m

Frequency of a wave, f = 450 Hz

To find,

The velocity of a wave.

Solution,

The distance between two crest is called wavelength of a wave. The speed of a wave is given by :

$v=f\lambda\\\\v=450\times 0.3\\\\v=135\ m/s$

So, the velocity of a wave is 135 m/s

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