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Questions and Answers
What is the law of reflection?
What is the law of reflection?
- The angle at which the wave is incident on the surface depends on the medium
- The angle at which the wave is incident on the surface equals the angle at which it is reflected (correct)
- The angle at which the wave is incident on the surface is always 90 degrees
- The angle at which the wave is incident on the surface is double the angle at which it is reflected
What type of reflection occurs when a mirror provides a model for light reflection?
What type of reflection occurs when a mirror provides a model for light reflection?
- Specular reflection (correct)
- Diffuse reflection
- Absorption
- Refraction
In acoustics, what does reflection cause?
In acoustics, what does reflection cause?
- Diffraction
- Refraction
- Echoes (correct)
- Absorption
What is observed with surface waves in bodies of water?
What is observed with surface waves in bodies of water?
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What can be reflected at shallow angles with special 'grazing' mirrors?
What can be reflected at shallow angles with special 'grazing' mirrors?
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Study Notes
The Law of Reflection
- The law of reflection states that the angle of incidence is equal to the angle of reflection.
Types of Reflection
- Specular reflection occurs when a mirror provides a model for light reflection, resulting in a clear and undistorted image.
Acoustics and Reflection
- In acoustics, reflection causes echoes.
Surface Waves in Bodies of Water
- With surface waves in bodies of water, total reflection is observed, where the wave is completely reflected off the surface.
Grazing Mirrors
- X-rays can be reflected at shallow angles with special 'grazing' mirrors, allowing for the manipulation of X-ray beams.
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