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Chapter 29:15 Quest.
Question | Answer |
---|---|
When a wave is totally reflected, how much of the energy bounces back? | All of the energy. |
Metal surfaces are what to light waves? | Rigid. |
If a candle is placed in front of a plane mirror, rays of light from the camdle are reflected from the mirror in which direction? | All directions. |
Real images are formed by converging light rays and can be displayed on a screen. These images are always what? | Inverted. |
More sound energy is reflected from what two surfaces than fron a soft and irregular surface? | A rigid and smooth surface. |
When light is incident on a rough surface, it is reflected in what type of direction? | Many directions. |
A smooth mirror is only reflected in one direction, a(n) what pattern? | Orderly pattern. |
When light rays hit a convex mirror straight on, do the reflected rays diverge outward or remain parallel with each other? | They diverge outward. |
If the angle of incidence is 25 degrees, then what is the angle of reflection. How is that possible? | The angle of reflection would be 25 degrees, too. Because it is stated in the Law of Reflection |
When light strikes glass perpendicularly, about what percentage of its energy is reflected? | About 4%. |
What type of materials are not as rigid to light waves? | Glass and water |
Where can the angle of incidence and the andgle of reflection be found? | For the angle of incidence, it is found between the incident ray and the normal. For the angle of reflection, it is found between the reflected ray and the normal. |
Where can a virtual image be found? | It appears to be in a location where light does not really reach. |
The law of reflection holds for curved mirrors. However, what two things are affected that makes the object and image no longer equal? | The sizes and distances. |
Virtual images in mirrors are images that seem to be in or behind the mirror. These images are always what? | Upright. |