# Light from a sodium lamp (S) passes through two polaroid sheets and as shown in fig. What will be the effect on the intensity of the light transmitted (i) by and (ii) by on rotating polaroid about the direction of propagation of light ? Justify your answer in both cases.

i) The intensity transmitted by P1 is unaffected because the intensity of unpolarized light transmitted by a Polaroid does not depend on the orientation of the Polaroid with respect to the direction of propagation of light.

ii) The intensity of light transmitted by P2 will vary from I1 to zero.
As per Malus’ Law, $I=I_0cos^2\theta$
Where $\theta$ is the angle between the pass axis of the polaroid P2 and the pass
the axis of polaroid P1 .
As $\theta$ varies from $0\ to\ \pi/2$ $I_2\ will\ vary\ from\ I_1 \ to\ 0$

## Related Chapters

### Preparation Products

##### Knockout NEET May 2023 (Easy Installments)

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Mentorship from our Experts, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 5499/-
##### Knockout JEE Main April 2021 (One Month)

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Weekend Live Classes, Mentorship from our Experts, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 14000/- ₹ 4999/-
##### Knockout NEET Aug 2021 (One Month)

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Weekend Live Classes, Mentorship from our Experts, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 14000/- ₹ 4999/-
##### Knockout JEE Main May 2021

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Weekend Live Classes, Mentorship from our Experts, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 22999/- ₹ 9999/-