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If for same temperature and pressure change, the value of bulk modulus is compared for isothermal process and adiabatic process, which one would be higher?

(a) Isothermal process

(b) Adiabatic process

(c) Value is constant for both the processes

(d) None of the mentioned

The question was asked in an interview.

My question is taken from Thermodynamic Properties & Compressibility topic in portion Properties of Fluids of Fluid Mechanics

1 Answer

+2 votes
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Best answer
Correct option is (b) Adiabatic process

Easy explanation: For isothermal process

                    K=p

                    For adiabatic process

                    K=kp

where K=Bulk modulus

           k=Polytropic constant

           p=Pressure.

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