1st polaroid 2nd polaroid Find the final intensity of light $ \left(I^{\prime \prime}\right) $, if the angle between the axes of two polaroids is $ 60^{\circ} $

Question

1st polaroid 2nd polaroid Find the final intensity of light $ \left(I^{\prime \prime}\right) $, if the angle between the axes of two polaroids is $ 60^{\circ} $, $ \frac{3 I_{0}}{2} $, $ \frac{I_{0}}{2} $, $ \frac{I_{0}}{4} $, $ \frac{I_{0}}{8} $

MARKS App · Accepted Answer

From first polaroid the unpolarised light will become polarized with half the intensity. So, I ′ = I 0 2 From second polaroid I ′ ′ = I ′ cos 2 ⁡ θ = I 0 2 cos 2 ⁡ 60 = I 0 2 1 4 = I 0 8

Search any question & find its solution

Looking for more such questions to practice?