The expansion of an ideal gas of mass m at a constant pressure P is given by the straight line D. Then the expansion of the same ideal gas of mass 2m at a pressure P/ 2 is given by the straight line

1.  E                           

2.  C

3.  B                           

4.  A

4.    PV=μRT=mMRT         VT = Slope=mP    For first condition slope mP graph is D given in the problem    For second condition slope =2mP/2=4mP i.e. slope becomes four time so graph A is correct in this condition.

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