Question

Pressure versus density graph of an ideal gas is shown in figure –

• A. During the process AB work done by the gas is positive
• B. During the process AB work done by the gas is negative
• C. During the process BC internal energy of the gas is increasing
• D. None of these

Answer 1

Answer: (D)

None of these

Answer 2

r = and r µ $\frac { 1 } { \mathrm {~V} }$

During AB, r and hence V is constant.

Therefore, work done is zero.

During BC, P µ r i.e., T

and hence, U is constant