$A$ monoatomic ideal gas,initially at temperature $T_1$,is enclosed in a cylinder fitted with a frictionless piston. The gas is allowed to expand adiabatically to a temperature $T_2$ by releasing the piston suddenly. If $L_1$ and $L_2$ are the lengths of the gas column before and after expansion respectively,then $\frac{T_1}{T_2}$ is given by:

  • A
    $\left(\frac{L_1}{L_2}\right)$
  • B
    $\left(\frac{L_2}{L_1}\right)^{2/3}$
  • C
    $\left(\frac{L_1}{L_2}\right)^{2/3}$
  • D
    $\left(\frac{L_2}{L_1}\right)$

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