An unpolarised beam of intensity I 0 falls on a polaroid. The intensity of the emergent light is

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An unpolarised beam of intensity $\mathrm{I}_{0}$ falls on a polaroid. The intensity of the emergent light is

PhysicsWave OpticsKCETKCET 2008

Options:

A $\frac{\mathrm{I}_{0}}{2}$
B $\mathrm{I}_{0}$
C $\frac{I_{0}}{4}$
D Zero

Solution:

2153 Upvotes Verified Answer

The correct answer is: $\frac{\mathrm{I}_{0}}{2}$

If an unpolarised light is converted into plane polarised light by passing through a polaroid its intensity becomes half.

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