First slide

Heat engine

Question

Efficiency of Carnot engine is 100% if

Moderate

A

$T_{2} = 273 K$
B

$T_{2} = 0 K$
C

$T_{1} = 273 K$
D

$T_{1} = 0 K$

Solution

$η = 1 - \frac{T_{2}}{T_{1}} for 100 % efficiency η = 1 which gives T_{2} = 0 K .$

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