Thermodynamic process is shown below on a $P-V$ diagram for one mole of an ideal gas. If $V _{2}=2 V _{1}$ then the ratio of temperature $T _{2} / T _{1}$ is ...... .
  • A$\frac{1}{2}$
  • B$2$
  • C$\sqrt{2}$
  • D$\frac{1}{\sqrt{2}}$
JEE MAIN 2021, Diffcult
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