Refraction (Form 3)

Which of the following statements best describes 'refraction'?

• The bouncing off of light when it hits a surface.

• The absorption of light when it hits a surface.

• The bending of light when it crosses the boundary from one medium to another.

• The bending of a medium as light passes through it.

Which of these media can be used to demonstrate the refraction of light? (You may choose more than one)

• water

• wood

• diamond

• air

In the ray diagram below, which line represents the incident ray?

• A

• B

• N

In the ray diagram below, which angle represents the refracted angle?

• A

• B

• C

What is the name given to the quantity that tells us how much the light will bend when it travels from air into a medium?

• refractive index

• optical index

• refraction limit

• optical limit

Glass has a refractive index of 1.5 and diamond has a refractive index of 2.4.

This tells us that diamond is ____________ optically dense than glass.

• less

• more

Why does light bend when it crosses the boundary from one medium to another?

• Light is pushed to the side by the second medium

• Light gets confused in the second medium

• Light is attracted to the normal

• Light changes speed in the second medium

In which medium does light travel FASTEST?

• air

• water

• glass

• diamond

When white light is separated into its seven component colours, this effect is known as _____________

• reflection

• dispersion

• absorption

• crystallization

Which of the following shows the effects of refraction?

(You may choose more than one)

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