When an unpolarized light of intensity I0 is incident on a polarizing sheet, the intensity of the light which does not get transmitted is

Question

When an unpolarized light of intensity I0 is incident on a polarizing sheet, the intensity of the light which does not get transmitted is (A)  (1/2) I0  (B)  (1/4) I0  (C) zero (D)  I0

Tardigrade Admin · Accepted Answer

According to Malus law I = I0 cos2 θ Intensity of polarized light = (I0/2) ∴ Intensity o untransmitted ight = I0 - (I0/2) = (I0/2)

Q. When an unpolarized light of intensity $I_{0}$ is incident on a polarizing sheet, the intensity of the light which does not get transmitted is

$\frac{1}{2} I_{0}$

$\frac{1}{4} I_{0}$

zero

$I_{0}$

According to Malus law $I = I_{0} co s^{2} θ$
Intensity of polarized light = $\frac{I _{0}}{2}$
$∴$ Intensity o untransmitted ight = $I_{0} - \frac{I _{0}}{2} = \frac{I _{0}}{2}$

Q. When an unpolarized light of intensity I0​ is incident on a polarizing sheet, the intensity of the light which does not get transmitted is

21​I0​

41​I0​