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प्रश्न
The unit of loudness is _______.
पर्याय
cm
second
hertz
decibel
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उत्तर
The unit of loudness is decibel.
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संबंधित प्रश्न
The frequency is measured in second.
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Frequency
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In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
