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

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
A. 5Hz
B. 6Hz
C. 5.2Hz
D. 25Hz

Correct Option: Answer is A

V=Distancetime
= 50cm2s
= 25 cms−1.
V=fλ
f=Vλ
f=255
= 5 Hz

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