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- Interactive video for next 10 questions00:00 / 04:491. Multiple Choice00:005 minutes5 pts
What must objects do to be seen?
Emit light
Reflect light
Transmit light
2. Multiple Choice00:0030 seconds5 ptsWhat 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 Choice00:0030 seconds5 ptsAccording 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 Choice00:0030 seconds5 ptsWhat is specular reflection?
Reflection from a transparent medium
Reflection from a smooth surface
Reflection from a curved surface
5. Multiple Choice00:0030 seconds5 ptsWhat 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 Choice00:0030 seconds5 ptsWhat 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 Choice00:0030 seconds5 ptsWho discovered Snell's Law?
Isaac Newton
Galileo Galilei
Willard Snell
8. Multiple Choice00:0030 seconds5 ptsWhy 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 Choice00:0030 seconds5 ptsWhat 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 Choice00:0030 seconds5 ptsWhat 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
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
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
Tick the correct of TWO devices which use the principle of light reflection in our daily lives.
- 15. Multiple Choice
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
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
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
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
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 ChoiceLight bending as it passes from one medium (object) to another is...RefractionReflection
- 21. Multiple ChoiceGlass has a _____________ index of refraction than air.EqualGreaterLessImpossible to say
- 22. Multiple ChoiceLight 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=2.45diamondwaterflint glassbarium glass - 23. Multiple ChoiceAccording to the Law of reflection, a light ray striking a mirrorcontinues moving through the mirror in the same directionmoves into the mirror at a slightly different anglebounces off the mirror toward the direction it came frombounces off the mirror at the same angle it hits.
- 24. Multiple Choice
What happens when light hits a shiny or smooth surface?
It disappears.
It is refracted.
It is absorbed.
It is reflected.
- 25. Multiple Choice
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 ChoiceWhy 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 ChoiceIt's called _______ when light bounces off the smooth surface of an object.RefractionReflectionDiffractionInterference
- 28. Multiple ChoiceLight bouncing off a mirror is an example of...RefractionReflectionDiffractionInterference
- 29. Multiple ChoiceWhat 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 ChoiceThe two kinds of reflection aretransparent and translucentopaque and translucentregular and diffuse
- 31. Multiple Choice
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.
The mirror is cracked and angles upward at 0.5o.
- 32. Multiple Choice
What image show light being reflected?
- 33. Multiple ChoiceWhy do you see your image in a mirror?Light is reflected.Light is refracted.Light is absorbed.Light is diffused.
- 34. Multiple ChoiceWhich of the following does not refract light?prismconvex lensconcave lensmirror
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