Question

A graph of a wave is shown if the frequency f is 8.0 Hz what is the waves speed

Answer 1

Answer:

C

$6 = \frac{3}{2} \lambda \\ wavelength : \: \lambda = 4 \: m \\ from \: wave \: equation \\ v = f\lambda \\ v = 8 \times 4 \\ v = 24 \: {ms}^{ - 1}$

Answer 2

The speed of the waves will be =  $24\dfrac{m}{s}$

Given data is frequency f = 8.0 Hz

What will be the speed of the wave?

As we know that the speed of the wave is given by the formula below

$V=f\times \lambda$

Since

$6=2 \lambda$

$\lambda =3m$

now

$V=8\times3$

$V=24m$

The speed of the waves will be = $24\dfrac{m}{s}$

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