For process 1, `Delta U` is positive, for process 2, `Delta U` is zero and for process 3, `Delta U` is negative. Find the parameters indicating `x` and `y` axes.

Options

A. Temperature and volume
B. Temperature and pressure
C. No. of moles and pressure
D. Volume and pressure

Answer

D

Explanation

d. For process 2, `Delta U = 0`. It will isothermal process. If temperature is shown on x-axix, isothermal on x-axis not be shown as otherwise shown in the question for process 2. Hence option `(a)` and `(b)` are not correct. Obviously, option `(c )` is not correct.