Q199 / 200 · Manipal (MET) 2014 · Physics
Temperature of a gas is $20^{\circ} \mathrm{C}$ and pressure is changed from $1.01 \times 10^5 \mathrm{~Pa}$ to $1.165 \times 10^5 \mathrm{~Pa}$. If volume is decreased isothermally by $10 \%$. Bulk modulus of gas is
- Correct answerA$1.55 \times 10^5$
- B$0.155 \times 10^5$
- C$1.4 \times 10^5$
- D$1.01 \times 10^5$
Solution
$\begin{aligned} B=-\frac{\Delta p}{\left(\frac{\Delta V}{V}\right)} & =-\frac{(1.165-1.01) \times 10^5}{0.1} \\ & =1.55 \times 10^5\end{aligned}$
Hence, the correct answer is option: 'A'.