Lights - Reflection, Refraction, Dispersion, Colours

True/False: The angle of reflection is always equal to the angle of incidence on a plane mirror.

(a)  

The line drawn perpendicular to the surface at the point of incidence is called the (a)   .

A ray of light hits a plane mirror at an angle of 30° to the normal. What is the angle of reflection?

• 30°

• 60°

• 90°

A ray diagram has an incident ray at an angle of 40° with the normal on a mirror. What is the angle of reflection?

• 40°

• 42°

• 41°

A plane mirror always forms a real image.
True or False

(a)  

When light passes from air to glass, it _______ and bends _______ the normal.

• Moves faster, away

• Slows down, towards

• Slows down, away

• Moves faster, towards

When light passes from water to air, the angle of refraction is:

• Greater than the angle of incidence

• Equal to the angle of incidence

• Less than the angle of incidence

A light ray passing from air into water, bending toward the normal What happens to the speed of light as it enters the water?

• Increases

• Decreases

• Remains the same

Refraction occurs because the speed of light changes as it moves between different materials.
True or False

(a)  

The splitting of white light into its component colours by a prism is called (a)   .