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In YDSE apparatus shown in figure wavlen...

In YDSE apparatus shown in figure wavlength of light used is `lambda`. The screen is moved away form the source with a constant speed v. Initial distance between screen and plane of slits was D.

At a point P on the screen the order of fringe will

A

increase

B

decrease

C

remain constant

D

first increases and then decreases

Text Solution

Verified by Experts

The correct Answer is:
B
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