Physics-
General
Easy
Question
The P-V diagram of a system undergoing thermodynamic transformation is shown in figure. The work done by the system in going from 
is 30J and 40J heat is given to the system. The change in internal energy between A and C is
- 10 J
- 70 J
- 84 J
- 134 J
The correct answer is: 10 J
Heat given DQ = 40 J and Work done DW = 30 J
Þ DU = DQ – DW = 40 – 30 = 10 J
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