Question

The graph showing the dependence of intensity of transmitted light on the angle between polarizer and analyzer is,

• A.
• B.
• C.
• D.

Answer 1

The correct option is B

According to Malu's law,
$I=I_{\circ }{\cos }^2\theta$

Here,
$I_{\circ }\to$ Intensity of plane polarized light
$I\to$ Intensity of transmitted light
$\theta \to$ Angle between transmission axes of polarizer and analyzer

For, $\theta =0^{\circ },I=I_{\circ }$
And, for $\theta ={90}^{\circ },I=0$

The equation of Malu's law and the above conditions are best represented by the graph shown in option $\left(B\right)$.

Hence, $\left(B\right)$ is the correct answer.

$\begin{array}{c}\text{Why this question?}\\ \text{To understand the application of Malu's law}\end{array}$