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Unpolarised light passes through a polar...

Unpolarised light passes through a polariser and analyser which are at an angle of `45^(@)` with respect to each other. The intensity of polarised light coming fromanalyse is `5W//m^(2)` . The intensity of unpolarised light incident on polariser is

A

`5 sqrt(3) // m^(2)`

B

`10 W // m^(2)`

C

`20 W // m^(2)`

D

`5 (sqrt(3))/(4) W // m^(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
`I = (I_(0))/(2) cos^(2) phi`
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