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Q.

The ratio WQfor a Carnot engine is 16 Now the temperature of o6 sink is reduced by 62oC, then this ratio becomes twice. The initial temperature of the sink and source are respectively :

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a

33oC, 67oC

b

37oC,99oC

c

67oC,33oC

d

97 K,37 K

answer is B.

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Detailed Solution

WQ=16⇒1-TLTH=16⇒TLTH=56If sink temperature decrease by 62oC then 1-TL-62TH=2×16 ⇒ 2TH=3TL-186 Hence, TH=372 K=99o C and TL=310 K = 37oC

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The ratio WQfor a Carnot engine is 16 Now the temperature of o6 sink is reduced by 62oC, then this ratio becomes twice. The initial temperature of the sink and source are respectively :