Question

17. A vibrating tuning fork produces concentric circular waves
on the surface of water. The distance between ll crests is
I m and the velocity of wave on the surface of water is
30 m/s. What is the frequency of the tuning fork?
(a) 200 Hz
(b) 250 Hz
(c) 300 Hz
(d) 400 Hz​

Answer 1

Answer:

your answer is 300 Hz

HOPE IT HELPS

Answer 2

CORRECT QUESTION:

A vibrating tuning fork produces concentric circular waves on the surface of water. The distance between two crests is 0.1 m and the velocity of wave on the surface of water is 30 m/s. What is the frequency of the tuning fork?

Calculation:

Distance between adjacent crests is wavelength :

$\rm \therefore \: \lambda = 0.1 \: m$

Now, frequency can be represented as:

$\rm \: f = \dfrac{v}{ \lambda}$

$\rm \implies\: f = \dfrac{30}{ 0.1}$

$\rm \implies\: f = \dfrac{300}{1}$

$\rm \implies\: f = 300 \: {s}^{ - 1}$

$\rm \implies\: f = 300 \: hz$

So, frequency of wave is 300 Hz.