Question

From total internal reflection to take place the rays of light must travel:

Options

• from rarer to the denser medium

• from denser to the rarer medium

• The angle of incidence in denser medium should be greater than critical angle

• the rays of light must travel from a denser to a rarer medium and the angle of incidence in the denser medium should be greater than the critical angle

Answer 1

The rays of light must travel from a denser to a rarer medium and the angle of incidence in the denser medium should be greater than the critical angle.

Explanation:

Total internal reflection occurs when light travels from a denser medium to a rarer medium and its angle of incidence is greater than the critical angle.