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Q.

The temperatures T1  and T2  of  two heat Reservoirs in the ideal carnot engine are 15000C  and 5000C  respectively. Which of these, increasing T1  by 1000C  or decreasing T2  by 1000C , would result in a greater improvement in the efficiency of the engine.

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a

Increasing T1

b

Decreasing T2

c

Either

d

None

answer is B.

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Detailed Solution

η=1−T2T1=1−5001500=23 a) η=1−5001500+100=1−5001600=0.687 b) η=1−500-1001500=1−4001500=0.73
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