JEE PHYSICS MCQ: THERMODYNAMICS

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Application +4 | -1

A Carnot engine has efficiency of

50 \%

. If the temperature of sink is reduced by

40^{\circ} \mathrm{C}

, its efficiency increases by

30 \%

. The temperature of the source will be:

View answer and explanation

Correct option: C

266.7 \mathrm{~K}

Option C (

266.7 \mathrm{~K}

) is correct because it is the temperature of the source calculated from the given efficiency changes of the Carnot engine.

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