When an unpolarized light of intensity I is incident on a polarizing sheet, the intensity of the light which is not transmitted is?

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Zero

answer is A.

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Detailed Solution

Concept: Unpolarized Light - When oscillations occur randomly rather than in a particular direction, we refer to these rays as unpolarized light.
Light that is not polarized can be transformed into polarized light by simply passing its beams through a polarization filter.
Since the incident light is unpolarized, the intensity of transmitted light at an angle

with respect to the polarizing axis is:

Integrating over all angles between

and

So, the intensity of light not transmitted is

Hence, the correct option is 3.

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