6 Multiple Choice Test: Light

What is the angle of reflection if the angle of incidence is 30°?

• 15°

• 30°

• 60°

• 90°

Which of the following best describes the law of reflection?

• Light bends when it enters a new medium.

• The angle of incidence equals the angle of reflection.

• Light travels faster in mirrors than in air.

• Reflection only occurs with curved surfaces.

In a ray diagram, the normal is:

• A line parallel to the mirror.

• A line perpendicular to the mirror at the point of incidence.

• The same as the incident ray.

• The path of the reflected ray.

A driver uses a rearview mirror to see a cyclist behind the car. How does light travel in this scenario?

• From the cyclist → mirror → driver's eye.

• From the driver's eye → mirror → cyclist.

• Directly from the cyclist to the driver's eye.

• From the mirror → cyclist → driver's eye.

Which tool is most useful for measuring angles in a reflection experiment?

• Thermometer

• Stopwatch

• Protractor

• Ruler

When light passes from air into glass, it:

• Speeds up and bends away from the normal.

• Slows down and bends toward the normal.

• Speeds up and bends toward the normal.

• Slows down and bends away from the normal.

Why does a pencil appear bent when placed in a glass of water?

• Light refracts as it passes from water to air.

• The pencil absorbs light.

• The water reflects light.

• The pencil emits light.

Which medium slows light the most?

• Air

• Water

• Glass

• Vacuum

A ray of light travels from glass into air. What happens to its speed and direction?

• Speeds up and bends away from the normal.

• Slows down and bends toward the normal.

• Speeds up and bends toward the normal.

• Slows down and bends away from the normal.

What causes refraction?

• Change in light intensity.

• Change in light speed between mediums.

• Absorption of light.

• Reflection of light.