Question

A light ray enters from medium A to medium B as shown in Figure 10.2. The refractive index of medium B relative to A will be

Options

• greater than unity

• less than unity

• equal to unity

• zero

Answer 1

greater than unity

Explanation - 

The ray of light travelling from medium A to medium B bends towards the normal. It shows that the medium B is denser and the medium A is rarer.