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Question
We consider a thermodynamic system. If `Delta"U"` represents the increase in its internal energy and W the work done by the system, which of the following statements is true?
Options
`Delta"U"` =-W in an adiabatic process
`Delta"U"`= W in an isothermal process
`Delta"U"`=-W in an isothermal process
`Delta"U"`= W in an adiabatic process
MCQ
Solution
`Delta"U"` =-W in an adiabatic process
Explanation:
By the first law of thermodynamics,
`"Q" = Delta"U" +"W"`
`"In adiabatic process, Q" = 0 Rightarrow Delta"U" = -"W"`
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Thermodynamic Process
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