NEET UG PHYSICS MCQ: THERMODYNAMICS

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The theory of refrigerator is based on

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Correct option: D

None of the above

Option D (None of the above) is correct because the theory of a refrigerator is based on the reversed Carnot cycle, which involves the transfer of heat from a cold reservoir to a hot reservoir by doing work on the system.

More Questions from THERMODYNAMICS

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The work done during expansion of a gas is independent of pressure if the expansion takes place When heat is added to a system, which of the following is not possible? The

p-T

relation for an adiabatic expansion is
A Carnot engine has efficiency

\frac{1}{4}

. Efficiency becomes

\frac{1}{3}

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

4^{\circ} \mathrm{C}

and

15^{\circ} \mathrm{C}

respectively. Then efficiency of refrigerator is The

SI

unit of mechanical equivalent of heat is