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Two beam of light having intensities I a...

Two beam of light having intensities I and 4I interfere to produce a fringe pattern on a screen. The phase difference between the beams is `(pi)/(2)` at point A and `pi` at point B. Then the difference between resultant intensities at A and B is : `(2001 , 2M)`

A

2l

B

4l

C

5l

D

7l

Text Solution

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The correct Answer is:
B
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