Refraction of light

Does a light ray traveling from one medium into another always bend toward the normal?

As light travels from a vacuum (n = 1) to a medium such as glass (n > 1), does its wavelength change?

Does its speed change? Does its frequency change?

What is the relationship between the speed of light and the index of refraction of a transparent substance?

What are the three conditions that must be met for refraction to occur?

Light passes from air into water at an angle of incidence of 42.3°. Determine the angle of refraction in the water.

Explain why there is no change in the direction of the ray at P

State the changes, if any, that occur to the speed, wavelength and frequency of the light as it enters the glass block.

Which diagram correctly shows a ray of light passing through a rectangular glass block?

• a

• b

• c

• d

A ray of light passes through a window. Which path does it take?

• a

• b

• c

• d

A parallel beam of light falls orra converging lens. Which diagram shows what happens to the beam of light?

• a

• b

• c

• d