Question

The bulk modulus of a perfectly rigid body is :

• A. zero
• B. 1
• C. infinity
• D. a value not one of those mentioned above.

Answer 1

Answer: (C)

infinity

Answer 2

$B =- V \frac{ dP }{ d V }$ Perfectly rigid body means there can be no change in volume, or $dV$ tends to zero. Thus, B tends to infinity.