Question

A ray of light is incident on a glass prism at an angle of 60°, while travelling from air to glass. The angle of refraction in glass is:

Options

• more than 60°

• less than 60°

• equal to 60°

• none of these

Answer 1

Less than 60°

Explanation:

Light travels from air, an optically rarer medium, to glass, an optically denser medium. It bends towards the normal, so the angle of refraction is less than the angle of incidence.