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Two sources of intensity 2I and 8I are u...

Two sources of intensity 2I and 8I are used in an interference experiment. The intensity at a point where the waves from two sources superimpose with a phase difference of (a) zero (b) `pi//2 and (c ) pi` is

A

`18 I ,10 I, 2I`

B

`5 I , 4 I, I`

C

`2 I , I,(I)/(2)`

D

`2 I, 10 I, 18 I`

Text Solution

Verified by Experts

The correct Answer is:
A
`I = I_(1) + I_(2) + 2 sqrt(I_(1)) sqrt(I_(2)) cos theta`
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