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A polaroid is placed at 45^@ to an incom...

A polaroid is placed at `45^@` to an incoming light of intensity `I_0`. Now the intensity of light passing through polaroid after polarisation would be

A

(a) `I_0`

B

(b) `I_0//2`

C

(c) `I_0//4`

D

(d) Zero

Text Solution

Verified by Experts

The correct Answer is:
B
`I=I_0cos^2impliesI_0cos^245=I_0/2`
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