NEETPhysicsThermodynamics
One mole of an ideal diatomic gas undergoes a transition from A to B along a path A B as shown in figure. The change in internal energy of the gas during the transition is
Options
- A- 20   KJ
- B20   J
- C- 12   KJ
- D20   KJ
Correct answer
A. - 20   KJ
Step-by-step solution
Change in internal energy ∆ U = f 2 n R T 2 - T 1 = f 2 p 2 v 2 - p 1 v 1 ⇒ ∆ U = 5 2 2 × 6 - 5 × 4 = - 20   KJ