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Two waves having intensity I and 9I prod...

Two waves having intensity `I and 9I` produce interference . If the resultant intensity at a point is `7 I`, what is the phase difference between the two waves ?

A

`90^(@)`

B

`100^(@)`

C

`120^(@)`

D

`110(@)`

Text Solution

Verified by Experts

The correct Answer is:
C
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