Sound of Music

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Sound of Music
Learning check! 2
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1. What is the approximate value of the
refractive index of glass?
A. 1.3
B. 0.13
D. 133
C. 13.3
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2.Which light ray correctly shows the path of the
refracted ray?
A.
B.
C.
D.
glass
air
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3. Which is unchanged by refraction
A. Frequency
B. Velocity
C. Wavelength
D. Wombats
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4.What is the unit of refractive index?
A. o
B. m
D. ms-1
C. No unit
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5. The speed of light in a vacuum is approximately
A. 3.00x106ms-1
B. 3.00x107ms-1
D. 3.00x109ms-1
C. 3.00x108ms-1
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6. Snells law states
A. m sin i/sin r
B. sin m sin r/sin i
D. i / sin r v2/v1
C. sin m i/ r
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7. Water has a refractive index of 1.33. Light is
incident at 60o. What is the angle of refraction ?
A. 50o
B. 41o
D. 32o
C. 55o
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8. Diamond has a refractive index of 2.42. Light
is incident at 60o. What is the angle of
refraction ?
A. 45o
B. 12o
D. 21o
C. 37o
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9.A balloon is filled with carbon dioxide. The
balloon will naturally sink. What would happen to
sound waves passing through?
A. They will bend inwards
B. They will bend outwards
D. No sound can pass through
C. Nothing
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10. Light passes from air to glass. Which
statement is true ?
A. Its wavelength decreases
B. Its amplitude increase
D. Its wavelength increases
C. Its velocity increases
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