Physics-
General
Easy
Question
Carbon monoxide is carried around a closed cycle abc in which bc is an isothermal process as shown in the figure. The gas absorbs 7000 J of heat as its temperature increases from 300 K to 1000 K in going from a to b. The quantity of heat rejected by the gas during the process ca is
- 4200 J
- 5000 J
- 9000 J
- 9800 J
The correct answer is: 9800 J
For path ab : 
By using 
For path ca :
(i)
(ii)
Also 
(iii)
on solving equations (i), (ii) and (iii)
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