Question

Unpolarized light is incident upon a system of two polaroid sheets. If a fraction of 0.161 of the inital incident light passes through the system, then what is the angle between the polaroid sheets?

Answer 1

55.42°

Step-by-step explanation:

According to malus law of intensity when an unpolarized light of intensity
`I_0` is passed through a two Polaroid sheets then the intensity becomes

`I=(I_0)/(2)cos^2\Phi`

We have given the ratio
`(I)/(I_0)=0.161`

So
`0.161=(1)/(2)cos^2\Phi`

`cos^2\Phi =0.322`

`cos\Phi =0.5674`

`\Phi =55.42^(\circ)`