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Chapter 29 q&a
Question | Answer |
---|---|
What wave occure when light doesn't travel through a mirror, but is returned by the mirror's surface? | these waves are reflected |
In totally reflected waves is the second medium very ridig True or False? | True |
In partially reflected waves is the secondd medium very ridig. True or False? | False |
When light shines perpendiculary on the surface os till water, about ___________ of its energy is reflected and the rest is transmitted. | 2% |
When light strikes glass perpendicularly, about __________ of its energy is reflected. | 4% |
Plane mirrors produce only __________ images. | virtual |
Plane mirrors are flat. True or False? | True |
Concave mirrors are curved outward. True or False? | False |
Convex mirrors curve outward. True or False? | True |
Each ray obeys the law of __________. | reflection |
Diffuse reflection is the reflection of light from a _________ surface. | rough |
Is sound energy reflected absorbed or transmitted? | not reflected |
A person in the audience recieves a small amount of reflected sound from many parts of the wall. True or False? | True |
What is reflected sound? | echo |
What is the bending of a wave as it crosses the boundary between two media at an angle? | refraction |