Question

A beam of white light goes from air into water at an incident angle of 75.0º. At what angles are the red (660 nm) and violet (410 nm) parts of the light refracted?

a) 58.6º, 37.8º
b) 43.2º, 25.6º
c) 62.4º, 40.5º
d) 75.0º, 75.0º

Answer 1

When a beam of white light goes from air into water, the red and violet parts of the light refract at angles of approximately 58.6° and 37.8° respectively.

Step-by-step explanation:

When a beam of white light goes from air into water, it undergoes refraction, meaning the different colors of light bend at different angles. This phenomenon is called dispersion. The angle at which each color refracts can be calculated using Snell's Law, which relates the angle of incidence and the angle of refraction.

For the red part of the light (660 nm), it refracts at an angle of approximately 58.6 ° in water. And for the violet part of the light (410 nm), it refracts at an angle of approximately 37.8° in water.

Therefore, the correct answer is (a) 58.6°, 37.8°).