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Unpolarised light of internsity 32 Wm^(-...

Unpolarised light of internsity `32 Wm^(-2)` passes through three polarisers such that the transmission axis of the last polariser is crossed with the first. If the intensity of emerging light is 2` Wm^(-2)`, the angle between the transmission axes o the first two polarisers is

A

`45^(0)`

B

`60^(0)`

C

`30^(0)`

D

zero

Text Solution

Verified by Experts

The correct Answer is:
C
`I_(1) = (I_(0))/(2), I_(2) = I_(1) cos^(2) theta , I_(3) =(I_(0))/(I_(0)) cos^(2) theta`
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