NEET Physics Question - Thermal Physics

Rankers Physics

Topic: Thermal Physics

The efficiency of a Carnot engine operating with reservoir temperature of $100\text{ }^\circ\text{C}$ and $-23\text{ }^\circ\text{C}$ will be: (1997)

$\frac{373+250}{373}$

$\frac{373-250}{373}$

$\frac{100-23}{100}$

$\frac{100+23}{100}$

Efficiency $\eta = 1 - \frac{T_2}{T_1} = 1 - \frac{250\text{ K}}{373\text{ K}} = \frac{373-250}{373}$.