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Chapter 29 questio
Question | Answer |
---|---|
What happens when a wave reflects off a very rigid surface? | the wave is totally reflected |
Why are metals such as silver and aluminum so shiny? | they reflect almost all the frequencies of visible light |
State the Law of Reflection | the angle of incidence and the angle of reflection are equal to each other |
What is a drawn line perpendicular to the point where the incident ray strikes the barrier? | normal |
How do rays of light reflect from flat mirrors? | They reflect in all directions |
How does a convex mirror effect an image. | The image is smaller and closer to the mirror than the object is. |
How does a concave mirror effect an image? | The image is larger and farther away than the object is. |
Define image | A likeness or a reproductionof an object. |
What is the difference between virtual and real images? | Virtual images are images that seem to be in or right behind the mirror, and real images are formed by converging light rays and can be displayed on a screen. |
What type of image is a concave mirror? | real |
What is the reflection of light from a rough surface? | diffuse reflection |
When is a surface considered polished? | when less than one-eighth the wavelength of the light falls on it. |
What type of mirror is a convex morror? | virtual |
Why can your eye ordinarily not tell the difference between an object and its virtual image? | The light enters your eye in exactly the same manner as it would if there were really an object where you see the image. |
What type of mirrors are security mirrors? | Convex mirrors. |