Answer to Question #181410 in Optics for Satyam

Question

What is malus law for unpolarized light.

Answer 1

$\bigstar$  Malus law for unpolarized light

$\bull$ For unpolarized light, the electric and magnetic field components of light waves oscillate in random directions having more than one plane.

$\bull$ The intensity of polarized light will become minimum when the polarization axis of the polarizer is perpendicular with the emitted polarized light.

$\bull$ Malus’ law states that the intensity of plane-polarized light that passes through an analyzer varies as

$\bull$ the square of the cosine of the angle between the plane of the polarizer and the transmission axes of the analyzer.

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formula

$\boxed{ I = I_o cos^2 ϕ}$

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Diagrams