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Question
120 J of heat is added to a gaseous system, whose internal energy change is 60 J, then the amount of external work done is ____________.
Options
150 J
70 J
110 J
60 J
MCQ
Fill in the Blanks
Solution
120 J of heat is added to a gaseous system, whose internal energy change is 60 J, then the amount of external work done is 60 J.
Explanation:
`"Q" = Delta "U" + "W"`
`therefore "W" = "Q" - Delta "U"`
`= 120 - 60 = 60 "J"`
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First Law of Thermodynamics
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