Two polarizers P1 and P2 are placed with an unknown angle theta between their ax

Question

Two polarizers P1 and P2 are placed with an unknown angle theta between their axes. In order to determine the value third polarizer P3 is inserted between them with angle of 60 degree with respect to P1 for their axes [Fig. 4 (a)]. Incident (unpolarized) light with intensity is transmitted by the polarizers with a result of light intensity of after P2. Now switch for the positions of P1 and P3 without any changes for their axes [Fig. 4 (b)]. The resulted intensity passing through P2 is measured to be . Determine the expression of in terms of and theta. Determine the expression of in terms of and theta. Determine the angle theta if .(Note, the lines in Fig. 4 are for reference for the convenience of indicating the directions for the polarizers' axes

Explanation / Answer

A) Ia=P2(cos(theta-60)0^2 B) (sorry can't read full question but it may be related to question A) c) (cant read it, to blurry!)

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