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Three waves due to three coherent source...

Three waves due to three coherent sources meet at one point. Their amplitudes are `sqrt2A_0 , 3A_0` and `sqrt2A_0` . Intensity corresponding to `A_0` is `l_0`. Phasse difference between first and second is `45^@`. Path difference between first and third is `lambda/4`. In phase angle, first wave lags behind from the other two waves. Find resultant intensity at this point.

Text Solution

Verified by Experts

The correct Answer is:
B
Path difference of `lambda/4` is equivalent to a phase
difference of `pi/2`.

`A_("net") = 5A_0`
`I prop A^2`
`rArr I_(net) = 25 I_0`
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