Question

A diamond lies completely in a pool of water. A beam of light hits the surface of the diamond at an angle of 75 °. Determine the width of the angle at which the light beam continues in the diamond.

Answer 1

$$\frac{\sin{75}}{\sin{x}}=\frac{n_d}{n_w}=\frac{2.42}{1.33}$$

$$x=32\degree$$