Question

One mole of an ideal mono atomic gas undergo a thermodynamic cyclic process ABCDA as shown in internal energy $U$ and density $\left(\rho \right)$graph.

Choose correct statement,

• A. Change in internal energy of gas in one full cycle is non zero
• B. Net work done by gas in one full cycle is zero.
• C. Net work done by gas in one full cycle is negative.
• D. Net work done by gas in one full cycle is positive.

Answer 1

The correct option is D Net work done by gas in one full cycle is positive.

The change in internal energy of an ideal gas in any cyclic process is zero. The work done is the area enclosed by the PV graph which is positive as can be seen from PV graph of the given cyclic process