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Three waves of amplitudes 12mu m, 4mu m ...

Three waves of amplitudes `12mu m`, `4mu m` & `9 mu m` but of same frequency arrive at a point in a medium with a successive phase difference of `((pi)/(2))`. Then the resultant amplitude in `mu m` is

A

`4`

B

`7`

C

`5`

D

`25`

Text Solution

Verified by Experts

The correct Answer is:
C
`A_(res)sqrt(A_(1)^(2)+(A_(2)^(2)+A_(3)^(2)))`
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NARAYNA-WAVES-Exercise-IV
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