Q.

Which term is not associated with sound wave?

A. Hertz
B. Decibel
C. Candela
D. Mach
Answer» C. Candela
Explanation: Candela is the standard unit of luminous intensity, the luminous power per unit solid angle emitted by a point light source in a particular direction, in the International System of Units. The word candela means candle in Latin.
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