railway RRB JE (CBT I + CBT II) Mock Test 2024 Thermodynamics Second Law of Thermodynamics and Entropy Statements of Second Law of Thermodynamics
Choose Kelvin-Plank statement among the following
1
It is impossible for a heat engine to produce net work in a complete cycle if it exchanges heat only with bodies at a single fixed temperature
2
It is impossible to construct a device which, operating in a cycle will produce no effect other than the transfer of heat from a cooler to hotter body
3
Entropy of universe is always increasing
4
None of above