The volume change of a solid copper cube 10 cm on an edge, when subjected to a pressure of 7 MPa is (Bulk modulus of copper = 140 GPa)

Here, L = 10 cm = 10× 10-2 m         P = 7 MPa = 7 × 106 Pa        B = 140 GPa = 140 × 109 Pa    As   B = P∆VV∆V = PVB = PL3B = (7 ×106Pa)(10×10-2m)3140×109 Pa         = 5×10-8m3 = 5 × 10-2 cm3