What happens when a beam of light hits a transparent medium?
It is completely absorbed
It only reflects
A portion reflects and a portion goes through
3. Multiple Choice
00:00
30 seconds
5 pts
According to the law of reflection, how are the angles of the incident ray and the reflected ray related?
They are not related
They are opposite
They are equal
4. Multiple Choice
00:00
30 seconds
5 pts
What is specular reflection?
Reflection from a transparent medium
Reflection from a smooth surface
Reflection from a curved surface
5. Multiple Choice
00:00
30 seconds
5 pts
What causes diffuse reflection?
Parallel rays reflecting at different angles
Parallel rays reflecting at the same angle
A beam of light bending as it passes through a medium
6. Multiple Choice
00:00
30 seconds
5 pts
What is refraction?
The scattering of light in many directions
The reflection of light from a smooth surface
The bending of light as it passes through a medium
7. Multiple Choice
00:00
30 seconds
5 pts
Who discovered Snell's Law?
Isaac Newton
Galileo Galilei
Willard Snell
8. Multiple Choice
00:00
30 seconds
5 pts
Why does light change direction when passing from one medium to another?
Because it reflects off the surface
Because it changes speed
Because it is absorbed and re-emitted
9. Multiple Choice
00:00
30 seconds
5 pts
What is total internal reflection?
When light is completely absorbed by a medium
When light is reflected back into the medium
When light reflects off a mirror
10. Multiple Choice
00:00
30 seconds
5 pts
What did Isaac Newton discover about white light?
It is made up of all the colors of the rainbow
It is the absence of color
It is a single color
12. Multiple Choice
30 seconds
1 pt
Diagram shows a phenomenon occurs when the spotlight is directed onto a mirror surface. What is the principle of light shown in the situation?
Light travels in a straight line
Refraction of light
Reflection of light
Light travels in parallel
13. Multiple Choice
30 seconds
1 pt
The following diagram shows the ray diagram when a torch light is torched towards a mirror. Which of the following is the correct reflected ray?
14. Multiple Choice
30 seconds
1 pt
Tick the correct of TWO devices which use the principle of light reflection in our daily lives.
15. Multiple Choice
30 seconds
1 pt
When does the light is refracted?
When light travels in a straight line
When light is bounced
When light travels in two different mediums
When light cannot pass through an opaque object
16. Multiple Choice
30 seconds
1 pt
Diagram shows the condition of a spoon in a glass of water.
What can be observed about the spoon?
The spoon looks bent.
The water is clearer.
The water level rises.
Light is refracted.
17. Multiple Choice
30 seconds
1 pt
What is the conclusion from your observation in this picture?
Light travels in a straight line
Light can be refracted
Light can be reflected
Light can pass through a transparent material
18. Multiple Choice
30 seconds
1 pt
What is the angle of reflection equal to?
The angle of refraction
The angle of incidence
The angle of absorption
The angle of light
19. Multiple Choice
1 minute
1 pt
What might explain why light travels in a straight line?
If there is nothing to interfere with light waves, they should travel in a straight line.
Light waves will always travel in a straight line, even if they come into contact with another object.
Light waves don't travel in a straight line.
Light waves travel in a straight line because sound waves travel in a straight line.
20. Multiple Choice
30 seconds
1 pt
Light bending as it passes from one medium (object) to another is...
Refraction
Reflection
21. Multiple Choice
30 seconds
1 pt
Glass has a _____________ index of refraction than air.
Equal
Greater
Less
Impossible to say
22. Multiple Choice
30 seconds
1 pt
Light has the highest velocity in which medium? flint glass n=1.70 barium glass n=1.60 crown glass n=1.523 water n=1.33 diamond n=2.45
diamond
water
flint glass
barium glass
23. Multiple Choice
30 seconds
1 pt
According to the Law of reflection, a light ray striking a mirror
continues moving through the mirror in the same direction
moves into the mirror at a slightly different angle
bounces off the mirror toward the direction it came from
bounces off the mirror at the same angle it hits.
24. Multiple Choice
30 seconds
1 pt
What happens when light hits a shiny or smooth surface?
It disappears.
It is refracted.
It is absorbed.
It is reflected.
25. Multiple Choice
45 seconds
1 pt
What is the angle of incidence?
The angle at which light bends in water.
The angle at which light hits a surface.
The angle at which light is absorbed by an object.
The angle at which light bounces off a surface.
26. Multiple Choice
1 minute
1 pt
Why does the lower part of the child appear so much different in size from the upper part?
The light rays that travel through water and then into air are refracted.
The light rays that travel through water and then into air are enlarged.
The light rays that travel through air and then into water are reflected.
The light rays that travel through air and then into water are reduced.
27. Multiple Choice
45 seconds
1 pt
It's called _______ when light bounces off the smooth surface of an object.
Refraction
Reflection
Diffraction
Interference
28. Multiple Choice
45 seconds
1 pt
Light bouncing off a mirror is an example of...
Refraction
Reflection
Diffraction
Interference
29. Multiple Choice
30 seconds
1 pt
What happens to light after it hits a mirror?
It goes through the mirror and bend.
It goes straight through the mirror.
It goes around the mirror.
It bounces off the mirror.
30. Multiple Choice
30 seconds
1 pt
The two kinds of reflection are
transparent and translucent
opaque and translucent
regular and diffuse
31. Multiple Choice
3 minutes
1 pt
Suppose you shine a laser directly at a mirror so that the laser strikes it perpendicularly. The angle of reflection is 0.5°. What does this tell you about the mirror?
The mirror’s surface is not perfectly flat. It is angled 0.5° in the location that the laser is striking.
The incident light ray struck the mirror at a 0.5o angle.
99.5% of the ray transmitted through the mirror while only 0.5% of the ray actually reflected.
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