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Q.

A Camot engine absorbs an amount Q of heat from a reservoir at an absolute temperature T and rejects heat to a sink at a temperature of T3. The amount of heat rejected is

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a

Q4

b

Q3

c

Q2

d

2Q3

answer is B.

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Detailed Solution

∴ η = 1 -T2T1 = WQ1where Q1 = heat absorbed, Q2 = heat rejected⇒ 1-T3T = WQ1  ⇒ 23 = WQ1 = Q1-Q2Q1⇒ 23 = 1-Q2Q1 ⇒ Q2Q1  = 13  ⇒ Q2 = Q13 = Q3
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