Question

According to the second law of refraction, for a given pair of media, the ratio of the sine of the angle of incidence to the sine of the angle of refraction:

Options

• remains constant

• always decreases

• always increases

• becomes zero

Answer 1

The second law of refraction states that for a given pair of media, \[\frac{\sin i}{\sin r} = \text{constant}\]. This constant ratio defines the refractive index of the second medium with respect to the first.