A light has amplitude A and angle between analyser and polariser is 60°. Light is reflected by analyser has amplitude.
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Question

A light has amplitude A and angle between analyser and polariser is 60°. Light is reflected by analyser has amplitude.

G1 Physics · Accepted Answer

The source uses the analyser transmission relation for the stated amplitude. The component along the analyser axis is A cos60°=A/2. Therefore option D.