Physics

Problem

Light travels through a system of two immiscible liquids, A and B, in a container. The speed of light in liquid A is

2.0 \times 10^{8}\,\text{m/s}

, and in liquid B is

2.4 \times 10^{8}\,\text{m/s}

. If a ray of light is incident from liquid A onto the interface with liquid B at an angle of

30^{\circ}

, calculate the angle of refraction in liquid B. (Use

c = 3 \times 10^{8}\,\text{m/s}

if needed, though direct ratio is preferred).