Question

Bulk modulus formula

Answer 1

The formula for bulk modulus is $K = -\frac{PV}{\Delta V}$.

Answer 2

Bulk modulus ($K$) quantifies a substance's resistance to compression. It is the ratio of applied pressure ($P$) to the resulting volumetric strain ($-\frac{\Delta V}{V}$). The formula is derived from this definition, where the negative sign accounts for the inverse relationship between pressure and volume.