Question

A Carnot engine whose source is at 400 K takes 200 cal of heat and reject 150 cal to the sink . What is the temperature of the sink ?
A. 800 K
B. 400 K
C. 300 K
D. Cannot say

Answer 1

Correct Answer - A
Efficiency of the engine `eta=1-(T_(2))/(T_(1))`
`"or" " " (T_(2))/(T_(1))=1-eta=1-(1)/(6)=(5)/(6)`
Temperature of the body `T_(2)=(5)/(6)T_(1)=(5)/(6)xx600`
= `500K`