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A Carnot enginer abosrbs an amount Q of ...

A Carnot enginer abosrbs an amount Q of heat from a reservoir at an absolute temperature T and rejects heat to a sink at a temperature of `T//3`. The amount of heat rejects is

A

Q/4

B

Q/3

C

Q/2

D

2Q/3

Text Solution

Verified by Experts

The correct Answer is:
B
`eta = 1-(T_2)/(T_1)=W/Q`
`implies 1-(T//3)/(T)=(Q-Q.)/(Q)`
`implies 2/3=(Q-Q.)/(Q)`
`implies 2Q=3Q-3Q.`
`implies Q.=Q/3` heat rejected.
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