A beam of unpolarized light of intensity I₀ is passed through a polaroid A, then through another polaroid B, oriented at 60° and finally through another polaroid C, oriented at 45° relative to B as shown. The intensity of emergent light is:

Question

Accepted Answer

(1) (I₀)/(16). After A: I₁=(I₀)/2. After B: I₂=I₁ cos²60°=(I₀)/2×1/4=(I₀)/8. After C: I₃=I₂ cos²45°=(I₀)/8×1/2=(I₀)/(16).

A beam of unpolarized light of intensity I₀ is passed through a polaroid A, then through another polaroid B, oriented at 60° and finally through another polaroid C, oriented at 45° relative to B as shown. The intensity of emergent light is:

Step-by-step solution

Why the other options are wrong