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In sound chapter why we are write 'dB' d in small and B capital?

Posted by Pradeep Chouhan 5 years, 8 months ago

CBSE > Class 08 > Science

1 answers

Meghna Thapar 5 years, 5 months ago

Decibel (dB), unit for expressing the ratio between two physical quantities, usually amounts of acoustic or electric power, or for measuring the relative loudness of sounds. One decibel (0.1 bel) equals 10 times the common logarithm of the power ratio. The decibel (dB) is a logarithmic unit used to measure sound level. It is also widely used in electronics, signals and communication. The dB is a logarithmic way of describing a ratio. The ratio may be power, sound pressure, voltage or intensity or several other things.

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