Question

a plane polarised of intensity i is incident on a polariser with the electric vector at angle of 30

Answer 1

Let the intensity of the original light is I0.

In acoordance to Malu’s law, the intensity of transmitted light after passing through the analyser will be,

I (θ) = I0cos2θ

Hereθ =45°

So,I (θ) = I0cos2(45°) = I0/2

Thus, I0/I = 2

From the above observation we conclude that,the ratio of intensities of orginal light and the transmitted light after passing through the analyser will be 2.