PhysicsA plane polarized light with intensity Iο is incident on a polaroid with Electric Field vector making an angle of 60° with transmission axis of polaroid. The intensity of the resulting light will be Iοn. Find the value of n.

A plane polarized light with intensity Iο is incident on a polaroid with Electric Field vector making an angle of 60° with transmission axis of polaroid. The intensity of the resulting light will be Iοn. Find the value of n.

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    Solution:

    Malus law: The law states that the intensity of a beam of plane-polarized light after passing through a rotatable polarizer varies as the square of the cosine of the angle through which the polarizer is rotated from the position that gives maximum intensity.

    Using Malus law, we have θ = 60°

    I = Iο cos2θ I = Iο cos260° = Iο4 

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