If $\Delta Q$ amount of heat energy is provided to a monoatomic gas sample having two moles in a process $PT=$ constant, then increase in temperature of gas is equal to

A monoatomic gas (one mole) is taken through process $A\to B$ as shown in figure. Find average molar heat capacity for the process.

Consider the $P-V$ diagram shown in figure, value of work done by gas is given by

Find net work done by gas in the cyclic process $A\to B\to D\to E\to A$

An ideal monatomic gas undergoes process $A\to B\to C$ as shown. Find efficiency of the thermodynamic cyclic shown in figure.

Heat is supplied by heater so that piston of mass $m$ moves a distance $x_0$ in upward direction and achieve a speed $v_0$ then work done by gas is given by (initially spring was in its natural length, $A$: area of cross section)