Question

A tuning fork gives 5beats/s when sounded with an open pioe of length 20cm

Answer 1

Explanation:

if you are asking for frequency of the fork, follow the answer and 8f not, specify what else.

v=4nl

.: n= v/4l

assume v= 320 m/s .

l=20cm=0.2 m

.: 4l=0.8 m

n= 3200/8= 400Hz.

:. frequency of the fork is either 405 Hz or 395Hz.