The compressibility of water is $4 \times {10^{ - 5}}$ per unit atmospheric pressure. The decrease in volume of $100$ cubic centimeter of water under a pressure of $100$ atmosphere will be ......... $cc$
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(a) $C = \frac{1}{K} = \frac{{\Delta V/V}}{{\Delta P}}$$\Rightarrow $ $\Delta V = C \times \Delta P \times V$
$ = 4 \times {10^{ - 5}} \times 100 \times 100 = 0.4cc$
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