Question

The angle of incidence of another red ray is 65º. The refractive index of the glass of block

Answer 1

Answer:

34º

Explanation:

The computation of the angle of refraction in the glass for this ray is shown below:

Given that

the angle of incidence of another red ray is 65º

And, n_1 = 1

n_2 = 1.62

According to shell law

n_1 sin $\theta$_1 = n_2 sin $\theta$_r

sin $\theta$_r = 1 sin 65÷ 1.62

= 0.559

$\theta$_r  = sin^-1 (0.559)

= 34º