First slide

Diffraction of light-Wave Optics

Question

The amplitude of polarized light transmitted through a polarizer is A. The amplitude of unpolarized light incident on it is

Easy

A

$\frac{A}{2}$
B

$\frac{A}{\sqrt{2}}$
C

$2A$
D

$\sqrt{2} A$

Solution

If $A_{0}$ be the amplitude of the unpolarized light then amplitude after a polarizer
$A = \frac{A_{0}}{\sqrt{2}}$

$∴ A_{0} = \sqrt{2} A$

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