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Among the two interfering monochromatic ...

Among the two interfering monochromatic sources A and B, A is ahead of B in phase by `66^@`. If the observation be taken from point P, such that `PB-PA=lambda//4`. Then the phase difference between the waves from A and B reaching P is

A

`156^(@)`

B

`140^(@)`

C

`136^(@)`

D

`126^(@)`

Text Solution

AI Generated Solution

To solve the problem, we need to find the total phase difference between the waves from sources A and B at point P. The total phase difference is the sum of the initial phase difference and the phase difference due to the path difference. ### Step-by-Step Solution: 1. **Identify the Initial Phase Difference**: - The problem states that source A is ahead of source B by \(66^\circ\). Therefore, the initial phase difference (\(\Delta \phi_0\)) is: \[ \Delta \phi_0 = 66^\circ ...
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