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31 Waves Reflection

This document contains a diagram and questions about the reflection of light rays at boundaries between different mediums, such as air and glass or air and water. The questions test understanding of the law of reflection, which states that for a given light ray and reflecting surface, the angle of incidence equals the angle of reflection. The document contains diagrams showing light rays incident on and reflecting off plane mirrors and boundaries between different transparent mediums, and asks students to determine angles of incidence and reflection, identify reflected rays, and draw reflected rays.

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eltytan
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433 views2 pages

31 Waves Reflection

This document contains a diagram and questions about the reflection of light rays at boundaries between different mediums, such as air and glass or air and water. The questions test understanding of the law of reflection, which states that for a given light ray and reflecting surface, the angle of incidence equals the angle of reflection. The document contains diagrams showing light rays incident on and reflecting off plane mirrors and boundaries between different transparent mediums, and asks students to determine angles of incidence and reflection, identify reflected rays, and draw reflected rays.

Uploaded by

eltytan
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Name: Period:

Waves-Reflection
1. The diagram below represents a light ray striking the
boundary between air and glass. 4. Two plane mirrors are positioned perpendicular to
each other as shown. A ray of monochromatic red
light is incident on mirror 1 at an angle of 55°. This
ray is reflected from mirror 1 and then strikes mirror
2.

What would be the angle between this light ray and


its reflected ray?
1. 30°
2. 60°
3. 120°
4. 150°

2. The diagram below represents a view from above


of a tank of water in which parallel wave fronts are
traveling toward a barrier.
Determine the angle at which the ray is incident
on mirror 2 and label the angle on the diagram (in
degrees). On the diagram, use a protractor and
straightedge to draw the ray of light as it is reflected
from mirror 2.

5. The diagram below represents a light ray reflecting


from a plane mirror.

Which arrow represents the direction of travel for


the wave fronts after being reflected from the bar-
rier?
1. A
2. B The angle of reflection for the light ray is
3. C 1. 25°
4. D 2. 35°
3. 50°
3. A sonar wave is reflected from the ocean floor. For 4. 65°
which angles of incidence do the wave’s angle of
reflection equal its angle of incidence?
1. angles less than 45°, only
2. an angle of 45°, only
3. angles greater than 45°, only
4. all angles of incidence
Page 180 WAV.C1 APlusPhysics: Waves-Reflection
Name: Period:

Waves-Reflection
Base your answers to the following questions on the information and diagram below:

In the diagram, a light ray, R, strikes the boundary of air and water.

6. Using a protractor, determine the angle of incidence.

7. Using a protractor and straightedge, draw the reflected ray on the diagram above.

8. The diagram below shows a ray of monochromatic


light incident on a boundary between air and glass.

Which ray best represents the path of the reflected


light ray?
1. A
2. B
3. C
4. D

APlusPhysics: Waves-Reflection WAV.C1 Page 181

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