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The intensity of interference waves in a...

The intensity of interference waves in an interference pattern is same as `I_(0)`. The resultant intensity at any point of observation will be

A

`I = 2 I_(0) [ 1 + cos phi]`

B

`I = I_(0) [ 1 + cos phi]`

C

`I = ([1 + cos phi])/(I_(0))`

D

`I = ([1 + cos phi])/(2I_(0))`

Text Solution

Verified by Experts

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