Light & Sound

The illustration shows a light ray striking an object.
In the illustration, the light ray striking the object is-

• absorbed
• stopped
• reflected
• refracted

What is the angle of reflection equal to?

• The angle of refraction

• The angle of incidence

• The angle of absorption

• The angle of light

According to the Law of reflection, a light ray striking a mirror

• continues moving through the mirror in the same direction
• moves into the mirror at a slightly different angle
• bounces off the mirror toward the direction it came from
• bounces off the mirror at the same angle it hits.

Glass has a _____________ index of refraction than air.

• Equal
• Greater
• Less
• Impossible to say

Refraction happens because light travels _____________ in glass or water compared to air

• Faster

• The same

• At the speed of sound

• Slower

How is light affected by an increase in the index of refraction?

• Its frequency increases
• Its frequency decreases
• Its speed increases
• Its speed decreases

Based on the image, as light passes from medium 1 to medium 2

• light speeds up and bends towards the normal

• light speeds up and bends away from the normal

• light slows down and bends towards the normal

• light slows down and bends away from the normal

Based on the image, which medium has a larger index of refraction?

• Medium 1 has a larger index of refraction.

• Medium 2 has a larger index of refraction.

• Both mediums have the same index of refraction.

• Cannot be determined.

In what medium does light travel the fastest?

• vacuum
• air
• water
• glass

Refraction is the bending of a wave disturbance as it passes from one _________ into another.

• glass
• medium
• area
• boundary