First slide

Graphs

Question

An ideal gas takes part in two thermodynamic processes ab and ac in which it is heated from the same initial state. The points b and c happen to be on an isotherm. In which process more heat is absorbed?

Easy

A

in the process ab
B

in the process ac
C

in both the processes heat absorbed is same
D

we cannot decide with the data available from the diagram

Solution

ΔQ = ΔW + ΔU. For both the processes ΔU is same as the points b, c are on isotherm
ΔW in the process ab = (1/2)×(P+4P)×(2V-V) = 2.5PV.
ΔW in the process ac = (1/2)×(P+2P)×(4V-V) = 4.5PV

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App