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Course: Class 11 Physics (India) > Unit 16

Lesson 2: Work from PV graph and internal energy
Science
Class 11 Physics (India)
Thermodynamics
Work from PV graph and internal energy
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Applications of first law - cyclic processes

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Problem

A gas is taken from state A to B via two paths as shown below.
The heat absorbed when the gas is taken via the curved path is 110 J and the work done is 70 J.
The heat absorbed for the path A→C→B is 50 J.
Find the work done by the gas in the process A→C.
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3/5
  • a simplified improper fraction, like 7/4
  • a mixed number, like 1 3/4
  • an exact decimal, like 0.75
  • a multiple of pi, like 12 pi or 2/3 pi
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