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Question

A gas performs Q work when it expands at constant pressure. During this process heat absorbed by the gas is 4Q. The average number of degrees of freedom for the gas is
  1. 5
  2. 6
  3. 4
  4. 3.5


Solution

The correct option is B 6
(Q)P=(γγ1)×Wγγ1=4QQγ=43γ=1+2fwheref=degreeoffreedom.43=1+2ff=6

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