A beam of polarized light of intensity I₀ passes through a sheet of ideal polarizing material.The polarization axis of the beam and the transmission axis of the sheet differ by 30 $\degree$.What is the intensity of the emerging light? A)0.87 I₀ B)0.75 I₀ C)0.50 I₀ D)0.25 I₀

Question

Quizplus · Accepted Answer

The intensity of the emerging light is given by Malus's Law: I = I₀ cos²θ. For θ = 30°, cos²(30°) = (√3/2)² = 0.75. Thus, the intensity is 0.75 I₀.

A Beam of Polarized Light of Intensity I0 Passes Through °\degree°

A Beam of Polarized Light of Intensity I₀ Passes Through $\degree$