Plane polarised light is passed through a pol | vedclass

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(D) The intensity of light transmitted through a polaroid is given by Malus' Law: $I = I_0 \cos^2 	heta$,where $	heta$ is the angle between the plan

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The intensity of light is twice maximum and twice zero.

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(D) The intensity of light transmitted through a polaroid is given by Malus' Law: $I = I_0 \cos^2 	heta$,where $	heta$ is the angle between the plane of polarization of the incident light and the transmission axis of the polaroid.As the polaroid is rotated by $2\pi$ $(360^\circ)$,the angle $	heta$ varies from $0$ to $2\pi$.- The intensity $I$ becomes maximum $(I = I_0)$ when $	heta = 0$ and $	heta = \pi$ (twice).- The intensity $I$ becomes zero when $	heta = \pi/2$ and $	heta = 3\pi/2$ (twice).Therefore,during one complete rotation,the intensity of light becomes maximum twice and zero twice.

Plane polarised light is passed through a polaroid. On viewing through the polaroid,we find that when the polaroid is given one complete rotation about the direction of the light,one of the following is observed:

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