Light Refraction Quiz

Denser materials refract light more because:

• They have higher transparency.

• They slow down light more.

• They are typically darker in color.

• They increase the light speed.

What is refraction?

• Bending of light as it passes from one medium to another.

• Reflection of light from a surface.

• Emission of light from a source.

• Absorption of light by a medium.

What happens to light when it moves from air into glass?

• It speeds up.

• It slows down.

• It stops.

• It reverses direction.

Total internal reflection occurs when:

• The angle of incidence is smaller than the critical angle.

• The angle of incidence is larger than the critical angle.

• Light passes from a denser to a less dense medium.

• B & C

What is the angle of incidence?

• The angle between the refracted ray and the normal.

• The angle between the incident ray and the normal.

• The angle between the incident ray and the refracted ray.

• The angle between the normal and the surface.

Which application uses total internal reflection to function?

• Telescope

• Periscope

• Optical fibre

• Sunglasses

When light exits glass and enters air, it will:

• Bend towards the normal.

• Bend away from the normal.

• Continue straight without bending.

• Instantly vanish.

What happens to a light ray as it hits the critical angle?

• It starts to reflect back into the original medium.

• It completely transmits into the new medium.

• It disappears.

• It splits into different colors.

Which of the following materials will likely refract light more?

• Water

• Air

• Glass

• Vacuum

Which statement is true regarding the speed of light in different media?

• Light travels fastest in denser media.

• Light travels slowest in a vacuum.

• Light speed is constant in all media.

• Light travels slowest in denser media.