Question

The pressure of a gas changes linearly with volume from $A$ to $B$ as shown in figure If no heat is supplied to or extracted from the gas then change in the internal energy of the gas will be Is

• A. $4.5 J$
• B. $-4.5 J$
• C. zero
• D. $6 J$

Answer 1

Answer: (A)

$4.5 J$

Answer 2

As Δq=0
Δu=−W
W=∫PdV
Δu=−W=30×103×150×10−6
=4500×10−3
=4.5J