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A boat anchor is rocked by waves whose c...

A boat anchor is rocked by waves whose consecutive crests are `100 m` apart. If the wave speed of the moving crests is `20 m//s`, calculate the frequency at which the boat rocks.

A

2 Hz

B

1 Hz

C

0.5 Hz

D

0.2 Hz

Text Solution

Verified by Experts

The correct Answer is:
D
`lambda = 100m, v = 20"m s"^(-1)`
`therefore upsilon = (v)/( lambda) = (20"m s"^(-1) )/( 100 m) = 0.2" s"^(-1) = 0.2" Hz"`
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