T2 G11 Quiz 1 Reflection And Refraction
10 Questions
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Questions and Answers
- 1.
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A girl looks into a bathroom mirror to brush her hair. The figure shows what she sees in the mirror.In which hand is she holding the brush?- A.
Right hand
- B.
Left hand
- 2.What causes refraction when light travels from air into glass?
- A.
The amplitude of the light waves changes.
- B.
The colour of the light changes.
- C.
The frequency of the light waves changes.
- D.
The speed of the light changes.
- 3.
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The diagram shows a ray of light entering a block of glass.Which numbered angles are the angles of incidence and of refraction?- A.
Incidence:1; refraction: 3
- B.
Incidence:1; refraction: 4
- C.
Incidence:2; refraction: 3
- D.
Incidence:2; refraction: 4
- 4.
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Which diagram correctly shows a ray of light passing through a rectangular glass block?- A.
A
- B.
B
- C.
C
- D.
D
- 5.
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Light from the Sun passes through a prism and a spectrum is produced on a screen.A thermometer placed at P shows a large temperature rise.Which type of radiation causes this?- A.
Infra-red
- B.
Microwave
- C.
Ultra-violet
- D.
Visible light
- 6.
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The diagram shows a ray of light incident on the edge of a piece of glass. The angle i is biggerthan the critical angle.Which arrow correctly shows the direction of the ray after it leaves the edge of the glass?- A.
A
- B.
B
- C.
C
- D.
D
- 7.
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A man sees a stone at the bottom of a pool of water.Which path could be taken by light from the stone to the man?- A.
A
- B.
B
- C.
C
- D.
D
- 8.A ray of light passes from air into a block of glass with index of refraction of 1.5. The angle of incidence is 30 degrees.Calculate the angle of refraction,
- A.
30
- B.
19.5
- C.
0.05
- D.
1
- 9.The speed of light in air is almost 3x108 m/s. In one piece of glass, light slows down to 2x108 m/s. What is the index of refraction for the glass?
- A.
6
- B.
0.67
- C.
1.5
- D.
5
- 10.
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In an optics lesson, a Physics student traces the paths of three rays of light near the boundarybetween medium A and air. The student uses a protractor to measure the various angles.State the critical angle of medium A- A.
53
- B.
90
- C.
133
- D.
43
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