GK
GENERAL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is the unit for measuring the amplitude of a sound?
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Decibel
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Coulomb
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Hum
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Cycles
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Explanation:
Detailed explanation-1: -The amplitude of a sound wave is expressed in hertz (Hz).
Detailed explanation-2: -We measure sound intensity (also referred to as sound power or sound pressure) in units called decibels. Decibels (dB) are named in honor of Alexander Graham Bell, the inventor of both the telephone and the audiometer.
Detailed explanation-3: -The perception of loudness is logarithmically related to the amplitude of the oscillation and not linearly (nor quadratically). We use the dB scale because it is also logarithmically related to the amplitude of the oscillation. This logarithmic relation also holds for pitch.
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