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Two sources of intensity I and 4 are use...

Two sources of intensity I and 4 are used in an interference experiment. Find the intensity at point where the waves from two sources superimpose with a phase difference (i) zero (ii) `pi//2` and (iii) `pi`.

A

9 I

B

5 I

C

I

D

0

Text Solution

Verified by Experts

The correct Answer is:
B
`I = I_(1) + I_(2) + 2 sqrt(I_(1)I_(2)) "cos" (pi)/(2)`
`= I + (4I) + 2 sqrt(I_(1)I_(2))xx 0 = 5I`
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