NEET2025Physics-Optics
NEET 2025 Physics Polarization MCQ Question
Type: MCQ-conceptual-Easy-Class 12
The intensity of transmitted light when a polaroid sheet, placed between two crossed polaroids at 22.5° from the polarization axis of one of the polaroid, is (I₀ is the intensity of polarised light after passing through the first polaroid):
A
I₀/2
B
I₀/4
C
I₀/8
D
I₀/16
Correct Answer
Option C
Detailed Explanation
The intensity of light after passing through a polaroid is given by Malus's law: I = I₀ cos²θ. For θ = 22.5°, cos²(22.5°) = 1/2, so I = I₀/4.
Found an issue with this question?