The equation a=-ρ\(\frac {da}{d\rho }\) where a is the speed of sound in the medium is the mathematical expression derived for the sound waves, which are _________

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1.	The equation a=-ρ\(\frac {da}{d\rho }\) where a is the speed of sound in the medium is the mathematical expression derived for the sound waves, which are _________
A.	Isentropic
B.	Incompressible
C.	Adiabatic
D.	Reversible
Answer» B. Incompressible

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