Light

What is the angle of incidence?

• The angle between the incoming light ray and the normal line.

• The angle between two incoming light rays.

• The angle between the outgoing light ray and the surface.

• The angle formed by the light ray and the horizontal plane.

When looking through a window, light is _______.

• reflected

• absorbed

• transmitted

• scattered

What is the phenomenon called when light changes direction as it passes from one medium to another?

• Reflection

• Refraction

• Diffraction

• Absorption

What is the term for light bouncing back when it hits a surface?

• Refraction

• Diffraction

• Reflection

• Absorption

What is the speed of light in a vacuum?

• Approximately 299,792 kilometers per second.

• Approximately 150,000 kilometers per second.

• Approximately 300,000 kilometers per second.

• Approximately 250,000 kilometers per second.

Another name for light bending is ....

• Reflection

• Refraction

• Diffraction

• Absorption

When a ray of light moves from the air to water it bends due to a change in _______.

• Speed

• Color

• Direction

• Intensity

What happens to light when it hits a rough surface?

• It reflects uniformly.

• It scatters.

• It absorbs completely.

• It passes through without change.

What is the normal line in optics?

• An imaginary line perpendicular to the surface at the point of incidence.

• A line that represents the path of light in a vacuum.

• A line that indicates the angle of reflection.

• A line that shows the direction of the incident light.

Absorb means_______?

• light gets taken in

• light gets reflected

• light gets emitted

• light gets scattered