Two Nicols are oriented with their principal planes making an angle of 60°.The percentage of incident unpolarized light which passes through the system is

Question

Two Nicols are oriented with their principal planes making an angle of 60°.The percentage of incident unpolarized light which passes through the system is (A) 50 % (B) 100 % (C) 12.5 % (D) 37.5 %

Tardigrade Admin · Accepted Answer

Intensity of polarized light from first polarizer= (100/2) = 50 % I =50 cos2 60° = (50/2) = 12.5 %

Q. Two Nicols are oriented with their principal planes making an angle of $6 0^{\circ}$ .The percentage of incident unpolarized light which passes through the system is

$50%$

$100%$

$12.5%$

$37.5%$

Intensity of polarized light from first polarizer $= \frac{100}{2} = 50%$
$I = 50 co s^{2} 6 0^{\circ} = \frac{50}{2} = 12.5%$

Q. Two Nicols are oriented with their principal planes making an angle of 60∘.The percentage of incident unpolarized light which passes through the system is

50%

100%

12.5%

37.5%