AIPMT PRELIMS2007Physics-Thermodynamics
AIPMT PRELIMS 2007 Physics Carnot Engine MCQ Question
Type: MCQ-numerical-Medium-Class 11
An engine has an efficiency of 1/6. When the temperature of sink is reduced by 62°C, its efficiency is doubled. Temperature of the source is
A
37°C
B
62°C
C
99°C
D
124°C
Correct Answer
Option C
Detailed Explanation
The efficiency of an engine is given by η =¹⁻ T₂/T₁. Doubling the efficiency implies a change in the temperature difference. Solving the equations gives T₁ = 99°C.
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