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A beam of light is incident on a rotating prism. If the intensity of the light changes from a maximum to a minimum (not zero), what is the nature of the incident beam?

A beam of light is incident on a rotating prism. If the intensity of the light changes from a maximum to a minimum (not zero), what is the nature of the incident beam? Correct Answer Elliptically Polarized

In this case, the incident beam is elliptically polarized light. The intensity is maximum when the principal plane of the Nicol prism is parallel to the major axis of the ellipse and minimum, when parallel to the minor axis.

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