Two ideal polarizing filters are oriented so that they transmit the maximum amou

Question

Two ideal polarizing filters are oriented so that they transmit the maximum amount of light when unpolarized light is shone on them.

(a) To what fraction of its maximum value is the intensity of the transmitted light reduced when the second filter is rotated through 26.0 degrees?
I1 = __________ I0

(b) To what fraction of its maximum value is the intensity of the transmitted light reduced when the second filter is rotated through 42.5 degrees?
I1 = __________ I0

(c) To what fraction of its maximum value is the intensity of the transmitted light reduced when the second filter is rotated through 66.0 degrees?
I1 = __________ I0

Explanation / Answer

Cos(angle) ^2

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