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NEET UG PHYSICS MCQ: THERMODYNAMICS
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The work done in an isothermal expansion of a gas depends upon
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Correct option: C
Both temperature and expansion ratio
Option C is correct because the work done in an isothermal expansion of a gas depends on both the temperature and the expansion ratio (ratio of final to initial volume).
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A Carnot engine has efficiency . Efficiency becomes when temperature of sink is decreased by 50 K (keeping source fixed). What is the original temperature of the sink? If sink and source temperature of a refrigerator are and respectively. Then efficiency of refrigerator is The unit of mechanical equivalent of heat is
A Carnot engine has efficiency . Efficiency becomes when temperature of sink is decreased by 50 K (keeping source fixed). What is the original temperature of the sink? If sink and source temperature of a refrigerator are and respectively. Then efficiency of refrigerator is The unit of mechanical equivalent of heat is
