Work, Power and EnergyEasy
Question
The graph below shows V-P curve for three processes. Choose the correct statement(s)
Options
A.Work done is maximum in process 1.
B.Temperature must increase in process 2 & 3.
C.Heat must be supplied in process 1.
D.If final volume of gas in process 1, 2 and 3 are same then temperature must be same.
Solution
Area under P-V curve and volume axis represent work.
Internal energy in 1 increases (expansion at constant pressure)
In process 2 and 3 internal energy may decrease depending on the process.
Since final pressure of 1, 2 & 3 are different, final temperature must also be different.
Internal energy in 1 increases (expansion at constant pressure)
In process 2 and 3 internal energy may decrease depending on the process.
Since final pressure of 1, 2 & 3 are different, final temperature must also be different.
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