A polarised light intensity `I_(0)` is passed through another polariser whose pass axis makes an angle of `60^(@)` with the pass axis of the former, What is the intensity of emergent polarised light from second polarised?

Options

A. `I = I_(0)`
B. `I= I_(0)/6`
C. `I = I_(0)/5`
D. `I_(0)/4`

Answer

D

Explanation

By Malus law, `I = I_(0) cos^(2)theta`
(I = Intensity of emergent polarized light)
Where `theta = 60^(@), I =` ?
(`I_(0)` = Intensity passed through polarizer)
`= I_(0) xx (1/2)^(2) = I_(0)/4`