Question

A perfect gas has bulk modulus at a constant temperature

• A. $$P$$
• B. $$\rho$$
• C. $$\rho T$$
• D. $$\frac {P}{\rho}$$

Answer 1

Answer:

$$P$$

The bulk modulus of a perfect gas at a constant temperature is equal to its pressure. This can be derived from the equation for compressibility, which is the reciprocal of the bulk modulus, and the equation for pressure and volume for an isothermal process.