The intensity, I , of a sound wave is inversely proportional to the square of the distance, d , from the source and directly proportional to the square of the amplitude, A .
At distance d from the point source of a sound wave, the amplitude of the wave is 6 A .
What is the amplitude at a distance of 3 d ?
Choose your answer A B C D
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The diagram shows a cross-sectional view through a water wave travelling from left to right.
At which point is the water moving with maximum speed in the upward direction?
Choose your answer A B C D
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The table below contains the frequencies of various parts of the electromagnetic spectrum.
Which row correctly describes X as infrared and Y as X-rays?
X
Y
A.
3 × 105 Hz
3 × 1020 Hz
B.
3 × 1010 Hz
3 × 1016 Hz
C.
3 × 1018 Hz
3 × 1014 Hz
D.
3 × 1014 Hz
3 × 1019 Hz
Choose your answer A B C D
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The diagram shows a wave with a frequency of 25 Hz travelling from left to right.
At this particular instant in time, the displacement from the equilibrium position of point X is zero.
What is the shortest time to elapse for the displacement of point Y to be zero?
Choose your answer A B C D
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The graphs below show the displacement of a wave as a function of time and position.
What is a correct expression for wave speed?
Choose your answer A B C D
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The graph shows the displacement, x , of a wave pulse as a function of distance, d .
Which graph correctly shows the displacement of the wave pulse as a function of time, t?
Choose your answer A B C D
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The star Deneb emits EM waves of wavelengths 500 µm, 5 µm, 0.5 µm and 0.005 µm.
Which row correctly identifies the areas of the EM spectrum to which these wavelengths belong?
500 µm
5 µm
0.5 µm
0.005 µm
A.
Microwave
Infrared
Visible
Ultraviolet
B.
Radio
Microwave
Infrared
Visible
C.
Infrared
Visible
Ultraviolet
X-ray
D.
Microwave
Infrared
Ultraviolet
Gamma
Choose your answer A B C D
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Visible light has wavelengths ranging from 400 nm to 700 nm.
What is the maximum frequency of visible light?
Choose your answer A B C D
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The diagram shows the positions of three points on a string as a transverse wave travels along it from left to right.
Which row correctly shows the velocities of the points on the string?
1
2
3
A.
↓
↓
↓
B.
↑
↑
↓
C.
↑
↓
↑
D.
↓
↑
↓
Choose your answer A B C D
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The diagram below shows a water particle on the crest of a wave in a ripple tank.
Which arrow correctly shows the force acting on the particle?
Choose your answer A B C D
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