Question

Bulk modulus of water is $2\times {10}^{9}Pa$. Air is ____ times more compressible than water

• A. $200$
• B. $2\times {10}^3$
• C. $2\times {10}^5$
• D. $2\times {10}^4$

Answer 1

The correct option is D $2\times {10}^4$

$\frac{B_{water}}{B_{air}}=\frac{C_{air}}{C_{water}}=\frac{2\times {10}^9}{1\times {10}^5}=2\times {10}^4\{\because C=\frac{1}{B}\}$