The internal energy U , pressure P and volume V of an ideal gas are related as U   = 3 P V + 4 . The…

The internal energy U, pressure P and volume V of an ideal gas are related as U =3PV+4. The gas is
  1. either monoatomic or diatomic
  2. polyatomic only
  3. monoatomic only
  4. diatomic only

Solution

U=3PV+4

nf2RT=3PV+4

f2PV=3PV+4

f=6+8PV

Since degree of freedom is more than 6 therefore gas is polyatomic

Asked in: JEE Main 2021 (26 Feb Shift 2)

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