An ideal monatomic gas expands to twice its volume. If the process is isothermal, the magnitude of work done by the gas is Wi. If the process is adiabatic, the magnitude of work done by the gas is Wa. Which of the following is true?
A
Wi=Wa>0
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B
Wi>Wa=0
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C
Wi>Wa>0
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D
Wa=Wi=0
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Solution
The correct option is CWi>Wa>0
From the image we can conclude that: Isothermal line is always higher than the adiabatic line and they both end at the same volume
The area under the isothermal line is bigger than the adiabatic ∴Wa<Wi Since gas is going work Wi>Wa>0.