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- 1. Multiple ChoiceWe can see objects because of_______reflectionrefractiontransmissiondiffraction
- 2. Multiple Choice
How does light behave as it enters this medium?
continue its path as straight line.
bends toward the normal
bends away from the normal
reflects
- 3. Multiple ChoiceAbsolute refractive index of any medium is always _______.less than 1greater than 110
- 4. Multiple ChoiceSwimming pools and the ocean look shallower than they really are due to:reflectiondispersionrefractiontotal internal reflection
- 5. Multiple ChoiceThe formula to calculate the refractive index isn=cvn=v/cn=c/vv=nc
- 6. Multiple ChoiceWhat is this called?refractionreflectionreconstroctionretraction
- 7. 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.
- 8. Multiple ChoiceA ray of light traveling from air into crown glass strikes the surface at an angle of 30 degrees. What is the angle of refraction? (air n=1, crown glass n=1.532)39.7 degrees19.2 degrees59.1 degrees12.3 degrees
- 9. Multiple ChoiceGlass has a _____________ index of refraction than air.EqualGreaterLessImpossible to say
- 10. Multiple ChoiceThe fact the two angles are the same is an example of....RefractionAngle of IncidenceLaw of reflectionMagnification
- 11. Multiple Choice
Light travels through a liquid at 2.25 x108 m/s. What is the index of the liquid?
1.33
1.0
1.523
2.45
- 12. Multiple ChoiceWhat is the index of refraction of a refractive liquid if the angle of incidence in the air is 35 degrees and the angle of refraction is 14 degrees?1.332.212.371.72
- 13. Multiple ChoiceIf the angle of incidence of light traveling through air, and then striking water is 30 degrees what is the angle of refraction? (n=1 air, n=1.33 water)15 degrees22 degrees43 degrees17 degrees
- 14. Multiple ChoiceLight has the lowest 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 - 15. Multiple ChoiceThe bouncing of light is known asMirrorRefractionIndex of refractionreflection
- 16. Multiple ChoiceWhat is this image showing?ReflectionRefractionThe law of reflectionConcave Mirror
- 17. 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.
- 18. Multiple ChoiceThe velocity of light in vacuum is _______ m/s3x1083x10123x1063x1010
- 19. Multiple ChoiceWhen light/waves move from one medium to another, change in ____ can be observed.speed, direction, frequencyspeed, directionfrequencyamplitude
- 20. Multiple ChoiceLarger the refractive index, the _____ the wave travels in the medium.fasterslower
- 21. Multiple ChoiceAs a light ray exits a dense medium and enters a medium with a smaller refractive index, the ray bends ____ the normaltowardsaway from
- 22. Multiple Choice
Reflection is to bounce as refraction is to...
unite.
bend.
separate.
return.
- 23. Multiple Choice
What is n2? Use the image to determine your answer.
.89
1.00 g
1.17 g
1.17
- 24. Multiple Choice
A ray of light travels in glass with an index of refraction of n = 1.50. The light then hits a glass/air interface. What is the speed of light in the air medium?
3.00 x 108 m/min
1.50 x 108 m/s
3.00 x 108 m/s
Cannot determine without knowing all variables.
- 25. Multiple Choice
What is the index of refraction for air?
3.00 x 108 m/s
1
1.43
none of the above.
- 26. Multiple Choice
What happens to the frequency of a light wave as it propagates (travels) from glass into air?
It remains constant.
It slows down.
It speeds up.
It bends.
- 27. Multiple Choice
What happens to the frequency of a light wave as it propagates (travels) from air into glass?
It remains constant.
It slows down.
It speeds up.
It bends.
- 28. Multiple Choice
Refer to the image. Observe the light passing through three layered materials and bending at each boundary. Rank the three materials in order of increasing index of refraction.
A < B < C
B < C < A
A = B < C
C < B < A
C < A = B
- 29. Multiple Choice
If the index between the two mediums is the same, what will also be the same? (select all that apply)
Speed
Angle of refraction and angle of incidence
Frequency
Wavelength
- 30. Multiple Choice
What happens to light during total internal reflection?
The angle of incidence is greater than the critical angle.
The angle of reflection is the same as the critical angle.
The angle of refraction is less than the critical angle.
The angle of incidence is zero.
- 31. Multiple Choice
Fiber optic cables work because of the principle of _____.
total internal refraction
incomplete internal refraction
total internal reflection
partial internal reflection
- 32. Multiple Choice
_____ cables transmit beams of light without allowing any of the light to escape until it gets to the end of the cable.
Ethernet
Fiber optic
Armored
Coaxial
- 33. Multiple Choice
When angle of incident (i) equals to critical angle (c) if light is traveled from a denser medium to a less dense medium,
total internal reflection occurs.
angle of refraction is equal to 90 degree.
light is refracted out
light travel in straight line
- 34. Multiple Choice
What is total internal reflection
Where a wave is refracted at the boundary between a dense medium and a less dense medium when the angle of incidence is greater than the critical angle.
Where a wave is refracted at the boundary between a dense medium and a less dense medium when the angle of incidence is smaller than the critical angle.
Where a wave is reflected at the boundary between a dense medium and a less dense medium when the angle of incidence is greater than the critical angle.
Where a wave is reflected at the boundary between a dense medium and a less dense medium when the angle of incidence is smaller than the critical angle.
- 35. Multiple Choice
What is the index of refraction of a refractive liquid if the angle of incidence in the AIR is 35 degrees and the angle of refraction is 14 degrees? What is the correct way to solve?
n (sin35) = (1)(sin14) ...n=0.42
n (sin35) = (1)(sin14) ...n=2.37
(1)(sin35) = n (sin14) ...n=2.37
(1)(sin35) = n (sin14) ...n=0.42
- 36. 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.
- 37. Multiple ChoiceLight traveling through air encounters a second medium which slows the light to 1.88 EE 8 m/s. What is the index of the second medium?1.001.4982.451.60
- 38. Multiple ChoiceWhat is the index of refraction of a refractive medium if the angle of incidence in the air is 40 degrees and the angle of refraction is 29 degrees?1.322.061.5231.586
- 39. Multiple ChoiceWhat is the index of refraction of a refractive liquid if the angle of incidence in the air is 35 degrees and the angle of refraction is 14 degrees?1.332.212.371.72
- 40. Multiple ChoiceWhat are the secondary colors of light?red, green, bluered, yellow, blumagenta, green, cyanyellow, magenta, cyan
- 41. Multiple ChoiceHow is the color yellow created?by combining red and blue lightby combining green and blue lightby combining red and green lightyellow is not created. it is a primary color
- 42. Multiple ChoiceHow is the color magenta produced?by combining red and green lightby combining red and blue lightby combining yellow and green lightby combining green and blue light
- 43. Multiple ChoiceWhen all of the primary colors of light are combined, what is the result?redmagentacyanwhite
- 44. Multiple ChoiceWhat happens when you combine yellow and blue light?green light is producedred light is producedblue light is producedwhite light is produced
- 45. Multiple Choicewhat happens when you combine cyan and red light?red light is producedgreen light is producedblue light is producedwhite light is produced
- 46. Multiple ChoiceDoes the rose reflect or absorb red?ReflectAbsorb
- 47. Multiple ChoiceWhat colors does the frog absorb?GreenRed, Orange, Yellow, Green, Blue, Indigo, VioletBlackRed, Orange, Yellow, Blue, Indigo, Violet
- 48. Multiple ChoiceGrass is green because it __________ green and __________ all the other colors.absorbs, reflectsreflects, transmitsreflects, absorbstransmits, absorbs
- 49. Multiple ChoiceThe illustration shows a light ray striking an object.
In the illustration, the light ray striking the object is-absorbedstoppedreflectedrefracted - 50. Multiple ChoiceThe Law of Reflection:
The angle of incidence is _________ the angle of reflectionbigger thanthe same assmaller than - Answer choicesTagsAnswer choicesTags