Tag: heat engine: second law of thermodynamics

Questions Related to heat engine: second law of thermodynamics

Which of the following is not a path function ?

  1. $\Delta$ Q

  2. $\Delta$ Q + $\Delta$ W

  3. $\Delta$ W

  4. $\Delta$ Q - $\Delta$ W


Correct Option: D
Explanation:

$\Delta Q=\Delta U+\Delta W\ \Delta Q-\Delta W=\Delta U$

$\Delta U$ is internal energy which is independent of path.