A monatomic gas at pressure $P_1$ and volume $V_1$ is compressed adiabatically to ${\frac{1}{8}}^{th}$ of its original volume. What is the final pressure of the gas is ........ $P_1$?
  • A$64$
  • B$1$
  • C$16$
  • D$32$
AIPMT 2010, Medium
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