Question

The critical angle of a transparent crystal for greeen light is 30 degree .find the angle of polarisation of that crystal?

Answer 1

we know, relation between polarising angle and critical angle.
e.g., $\boxed{\bf{tani=\frac{1}{sinC}}}$

Where i is angle of polarisation and C is the critical and of the transparent crystal.

so, tani = 1/sin30° = 1/(1/2) = 2
i = tan^-1(2)

hence, angle of polarisation is tan^-1(2)