You are provided with three polarizers with filters making angles of (a) 90 ∘ , (b) 180 ∘ and (c) −45 ∘ with respect to the vertical. you want to maximize the transmission through the set of three polarizers. what order provides you with maximum transmission?

Order of maximum transmission of the polarizer is A, C and B.

Solution:

As per the question:

For the first polarizer, the angle is quite insignificant:

(A) :

The light intensity after passing through the first polarizer is and this intensity does not depend on the angle of the polarizer.

Consider with the vertical, the intensity is given by:

(B) :

Suppose the second polarizer is   with the vertical.

Now, intensity through the second polarizer:

Now, if we consider the second polarizer to be ,

(C) :

Now,

Intensity through the third polarizer, if it is with the vertical:

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