Question

When a ray of light is refracted by a medium, the refracted ray does not have the same wavelength as the incident ray. This means that ... (a)The frequency of the light has increased but the velocity of the light remains a constant (b) The frequency of the light remains constant but the velocity of the light has decreased (c)The frequency of the light remains constant but the velocity of the light has increased (d)The frequency of the light has decreased but the velocity of the light remains a constant

Answer 1

Explanation:

b) The frequency of the light remains constant but the velocity of the light has decreased (rarer to denser)