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Question
In a thermodynamic system, W represents the work done by the system and ΔU is the increase in internal energy. Which of the following statements is true?
Options
In an isothermal process, ΔU = -W
In an adiabatic process, ΔU = -W
In an isothermal process, ΔU = W
In an adiabatic process, ΔU = W
MCQ
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Solution
In an adiabatic process, ΔU = -W
Explanation:
According to the first law of thermodynamics,
Q = ΔU + W
In adiabatic process, Q = 0
∴ ΔU = -W
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