Which of the following factors change when a sound gets louder?
intensity
Speed of the sound wves
frequency
wavelength
decibel level
amplitude
A
Speed of the sound wves
B
amplitude
C
wavelength
D
intensity
E
decibel level
F
frequency
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Solution
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When a sound gets louder, its amplitude increases. As intensity I∝A2 (amplitude), therefore the intensity of sound also increases which is measured in terms of decibel.
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