3.2.2 Refraction of light (3)

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1.

A ray of light travels from air into water. The refractive index of air is 1.00 and the refractive index of water is 1.33. Calculate the refractive index of water with respect to air. Explain what happens to the speed of light when light travels from air to water.

2.

A ray of light travels from air (n1 = 1.0) into a block of glass (n2 = 1.5). The angle of incidence is 30 degrees. Calculate the angle of refraction.

3.

Question 3

Explain why light refracts when it passes from air into water. Describe how the refractive index of a material changes with wavelength. How does this phenomenon explain the dispersion of white light?