question_answer

When an unpolarised light^df intensity\[{{I}_{0}}\]is incident on a polarising sheet, the intensity of the light which does not get transmitted is -                                           [AIEEE 2005]

A) \[\frac{1}{2}{{I}_{0}}\]

B) \[\frac{1}{4}{{I}_{0}}\]   

C) zer0

D) \[{{I}_{0}}\]

Correct Answer: A

Solution :

[a] From Malus law, the intensity

Intensity of polarised light

Intensity of untransmitted light