Match the following qauntities with their respective S.I. units:-
A
Hertz
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B
Decibel
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C
Meter
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Solution
Frequency is the number of complete vibrations in one second. Its S.I. unit is hertz. Loudness is the characterstic of a sound wave which is determined by amplitude. Its S.I. unit is decibel. Amplitude is the maximum displacement of a particle from its mean position. Its S.I. unit is meter.