Physics-(general)
NEET Physics (general) MCQ Question
Type: MCQ-numerical-Medium-Class 12
When unpolarised light passes through two polaroids, the intensity of transmitted light through the second polaroid is reduced to what fraction of the incident intensity if the angle between their axes is 45°?
A
1/2
B
1/4
C
1/8
D
1/16
Correct Answer
Option B
Detailed Explanation
According to Malus’ law, the intensity of light passing through two polaroids is I = I0 * cos²θ. With θ = 45°, I = I0 * (cos²45°) = I0 * 1/2 * 1/2 = I0/4.
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