railway RRB JE (CBT I + CBT II) Mock Test 2024 Thermodynamics First Law of Thermodynamics Application of First Law to Closed System
In a polytropic expansion process the ratio of final volume to its initial volume is 2 and ratio of final temperature to initial temperature is 1/2 then the polytropic index of expansion is
1
0
2
1
3
2
4
1.3