Question

In which of the following, the change in internal energy is more?
1
B
A
B
P(Pa)
P(Pa)
А
D
C с
V(m)
V(m)
A) In system A
B) In system B
C) Cannot be predicted
D) Change is zero in both. (both are​

Answer 1

Answer:

ANSWER

In the process AB we have

work done is zero (isochoric process)

Using First law we get

ΔU=ΔQ−0=600J

In the process BC the work done is calculated as

PΔV=8×10

4

×3×10

−3

=240J

Thus we get ΔU=200−240=−40J

Thus the total change in internal energy is given as

600−40=560J