Verified Solution • 2025–26 Session moderate

QJEEM15Phd742: JEE Main 2015 Physics - Class 11 JEEM15Phd742 Solution: Consider an ideal gas confined in an isolated closed chamber.…

Consider an ideal gas confined in an isolated closed chamber. As the gas undergoes an adiabatic expansion, the average time of collision between molecules increases as Vq, where V is the volume of the gas. The value of q is: (γ=CpCv)

Multiple Choice Options

  • A γ+12
  • B γ−12
  • C 3γ+56
  • D 3γ−56

Step-by-Step Verified Solution

τ=12πd2(NV)3RTM
τ∝VT
As, TVγ−1=K
So, τ∝Vγ+1/2
Therefore, q=γ+12

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