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A plane polarized light is incident norm...

A plane polarized light is incident normally on a tourmaline plate. Its `vecE` vectors make an angle of `60^(@)` with the optic axis of the plate. Find the percentage difference between initial and final intensities.

A

0.25

B

0.75

C

0.5

D

0.9

Text Solution

Verified by Experts

The correct Answer is:
B
`I=I_(0)cos^(2) theta`
`=I_(0)cos^(2) 60^(@)`
`I=(I_(0))/(4)`
`(I_(0)-I)/(I_(0))xx100%=(I_(0)-(I_(0))/(4))/(I_(0))xx100%`
`=(3I_(0))/(4I_(0))xx100=75%`
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