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A strone thrown into still water, create...

A strone thrown into still water, creates a circular wave pattern moving radially outwards. If r is the distance measured from the centre of the pattern. The amplitudeof the aves varies as

A

`r^(-1//2)`

B

`r^(-1)`

C

`r^(-2)`

D

`r^(3//2)`

Text Solution

Verified by Experts

The correct Answer is:
A
For circular wave, intensity `I prop(1)/(r)`.
Amplitude `A prop sqrt(I), a prop sqrt((1)/(r)) or, A prop r^(-1//2)`
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