Reflection And Refraction Quiz
(401).jpg "Reflection And Refraction Quiz - Quiz")
- 1.What is the normal?
- A.
The line perpendicular to the reflecting or refracting surface
- B.
The mean angle
- C.
The common angle at which waves reflect
- D.
How waves reflect and refract
- 2.What is the angle of incidence?
- A.
The angle between the incident ray and the normal
- B.
The angle between the normal and the surface
- C.
The angle between the surface and the ray
- D.
The angle between the reflected ray and the normal
- 3.What is the incident ray?
- A.
The ray before it hits the surface
- B.
The ray after it hits the surface
- C.
The ray after refraction
- D.
The ray at the normal
- 4.What happens to the speed of light as it passes through a different medium?
- A.
It changes speed
- B.
The speed stays the same
- 5.What happens when light is refracted?
- A.
It refracts towards the normal
- B.
The light stays the same
- C.
The normal changes
- D.
The light stays in the material
- 6.What is a critical angle?
- A.
The largest angle of incidence for which refraction can still occur
- B.
The minimum angle for a normal
- C.
The angle of the emergent ray
- D.
The angle at which refraction occurs
- 7.When light passes through a denser medium it speeds up.
- A.
True
- B.
False
- 8.What is total internal reflection?
- A.
When light passing from a medium with a moderate refractive index into one with a low refractive index and completely reflects
- B.
When light reflects on a surface
- C.
Another name for the emergent ray
- D.
When a substance absorbs all the light
- 9.Light can be refracted and reflected at the same time.
- A.
True
- B.
False
- 10.What is a phenomenon that optical fibers uses?
- A.
Total internal reflection
- B.
Refraction
- C.
Diffusion
- D.
Reflection
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