Four perfectly polarizing plates are stacked so that the axis of each plate is turned 30º clockwise with respect to that of the plate above it.The percentage of the incident unpolarized light that is transmitted by the stack is approximately
A)zero
B)0.78%
C)6.3%
D)21%
E)27%

Question

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The Answer of Four perfectly polarizing plates are stacked so that the axis of each plate is turned 30º clockwise with respect to that of the plate above it.The percentage of the incident unpolarized light that is transmitted by the stack is approximately
A)zero
B)0.78%
C)6.3%
D)21%
E)27%

Four Perfectly Polarizing Plates Are Stacked So That the Axis