Bulk Modulus — Practice Quiz

Question 1

Bulk modulus of water is 2.2 × 10⁹ Pa. Fractional volume change under 10⁵ Pa (~1 atm) pressure:

Accepted Answer

4.5 × 10⁻⁵

Answer

10⁻⁵

Answer

10⁻³

Answer

10⁻²

Question 2

Sound speed in air depends on:

Accepted Answer

Adiabatic bulk modulus γP

Answer

Isothermal bulk modulus

Answer

Pressure only

Answer

Density only

Question 3

Bulk modulus of an ideal gas under isothermal compression equals:

Accepted Answer

P

Answer

γP

Answer

P/γ

Answer

Zero

Question 4

If a solid has bulk modulus 50 GPa and is subjected to pressure 100 MPa, fractional volume change:

Accepted Answer

2 × 10⁻³

Answer

2 × 10⁻⁵

Answer

5 × 10⁻³

Answer

0.02

Question 5

Compressibility κ has units of:

Accepted Answer

1/Pa

Answer

Pa

Answer

Pa·m

Answer

Dimensionless