Question

Two Polaroids P1 and P2 are placed with their axis perpendicular to each other. Unpolarised light l0 is incident on P1. A third polaroid P3 is kept in between P1 and P2 such that its axis makes an angle 45º with that of P1. The intensity of transmitted light through P2 is

• A. $\frac {l_0}{2}$
• B. $\frac {l_0}{4}$
• C. $\frac {l_0}{8}$
• D. $\frac {l_0}{16}$

Answer 1

Answer: (C)

$\frac {l_0}{8}$

Answer 2

The correct option is (C): $\frac {l_0}{8}$.