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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 the point of observation will be

A

`I = 2I_(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:
D
`I = I_(1)+I_(2)+2sqrt(I_(1))sqrt(I_(2)) cos phi`
`I = I_(0)+I_(0)+2I_(0)cos phi`
`= 2I_(0) (1+cos phi)`
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