AIIMS2001Physics-Thermodynamics
AIIMS 2001 Physics Heat Engines MCQ Question
Type: MCQ-numerical-Medium-Class 11
An engine is working. It takes 100 calories of heat from source and leaves 80 calories of heat to sink. If the temperature of source is 127°C, then temperature of sink is
A
147°C
B
47°C
C
100°C
D
47 K
Correct Answer
Option B
Detailed Explanation
Using the efficiency formula η =¹⁻ Q₂/Q₁, where Q₁ = 100 cal and Q₂ = 80 cal, the efficiency is 20%. The temperature difference is 80°C, so the sink is at 47°C.
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