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Chapter 29- 15 que
Kohls homework assignment-2/20/10
Question | Answer |
---|---|
What's the Law of Reflection? | The angle of incidence and the angle of reflection are equal to each other. |
A mirror that curves inward is a ______ mirror. | Concave |
A mirror that curves outward is a ______ mirror. | Convex |
A mirror that is flat is a _____ mirror. | Plane |
A security and traffic control mirror is what kind of mirror? | Convex |
A makeup mirror is what kind of mirror? | Concave |
What happens when light is exposed on a rough surface? | It is diffused. |
What happens when sound energy is not relflected? | It is absorbed or transmitted. |
What kind of image do plane mirrors only produce? | Virtual. |
Does light travel through a mirror? | No, because it is returned by its surface. |
The angle of _______ equals the angle of ______. | Incidence/Reflection |
Refraction of light is caused by: | Changes in the speed of light, as it passes from one medium to another, or variations in the tempatures and densities of the same medium. |
The virtual image is larger and farther away from the object when an object is close to a _____ mirror. | Concave |
The virtual image is smaller and closer from the object when an object is close to _____ mirror. | Convex |
When are sound waves refracted? | When parts of a wave front travel at different speeds. |