Question

Why does Bulk modulus depend on material of the body?

Answer 1

Bulk modulus:

It is the ratio of increase in pressure acting on the given body and fractional change in volume.

$B=\frac{P}{\left({\displaystyle \frac{∆V}{V}}\right)}$

It gives the resistance of the given material for compression. Its value varies from material to material.

So, the Bulk modulus depends on material of the body.