Physics
Grade-6
Easy
Question
Sound is measured in _______.
- Newton
- Pascal
- Decibel
- Meter
Hint:
- The number of decibels, when expressing a power ratio, is ten times its logarithm at base 10.
The correct answer is: Decibel
- The unit of measurement of sound is Decibels. Sound energy is defined as ratio of transferring power to the delivering power and mathematically it can be written as ratio of 10 log transferring power to the delivering power. The decibel (symbol: dB) is a relative measuring unit which corresponds to one tenth of a bel.
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