Question

A violet ray of light leaves a first medium at an angle of 0.79 radians to the normal and enters a second medium at 0 56 radians to the normal. Given that the refractive index of the second medium is 1.33. What is the refractive index of the first medium?

Answer 1

$\frac{n_2}{n_1}=\frac{\sin\beta}{\sin\alpha},$

$n_2=n_1\frac{\sin\beta}{\sin\alpha}=1.$