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A cylindrical wavefront spreads form a l...

A cylindrical wavefront spreads form a line source which is comparable to a long and narrow slit. The wavefront is at a distance d form source then th amplitude of wave is proportional to

A

`1/d`

B

`1/d^2`

C

`1/d^3`

D

`1/(d^(1//2))`

Text Solution

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The correct Answer is:
D
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