Light that is initially unpolarized and with initial intensity I0 passes through two polarizing filters. The angle between the polarizing axis of the first and second filter is 45°. What is the intensity of the light after it has passes through the second filter?
(b) 0.71 I0
(c) 0.50 I0
(d) 0.25 I0
(f) none of the above answers
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