A vibrator causes water ripples to travel across the surf...
A vibrator causes water ripples to travel across the surface of a tank. The wave travels 50cm in 2s and the distance between successive crests is 5cm. Calculate the frequency of the vibrator
5Hz
6Hz
5.2Hz
25Hz
Correct answer is A
V=Distancetime
= 50cm2s
= 25 cms−1.
V=fλ
f=Vλ
f=255
= 5 Hz