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Q.

An ideal heat engine working between temperature TH and TL has efficiency η . If both the temperature are raised by 100K each, the new efficiency of heat engine will be

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a

Greater than η 

b

Greater or less than η depending upon the nature of the working substance

c

Equal to η 

d

Less than η 

answer is C.

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Detailed Solution

η1=1-T2T1 η2=1-T2+100T1+100

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