Which is true regarding a plane polarized light?

Options

A. As it propagates, magnitude of electric vector varies periodically but direction of polarization remains unchanged.
B. As it propagates,neither magnitudes nor direction of electric vector varies
C. As it propagates, both magnitude of electric vector and direction of polarization varies
D. Change in orientation of nicol prism has no effect on direction of polarization.

Answer

A

Explanation

In plane polarised light, the magnitude of electric vector varies periodically but direction of polarisation remains fixed.