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Q.

Units in which sound measured is

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a

decibels

b

angstrom

c

knoop

d

farads

answer is B.

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Detailed Solution

Sound is measured in decibels (dB). A whisper is about 30 dB, normal conversation is about 60 dB, and a motorcycle engine running is about 95 dB. Noise above 70 dB over a prolonged period of time may start to damage your hearing.

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