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Question: Answered & Verified by Expert
A Carnot engine has an efficiency of 16. When the temperature of the sink is reduced by 62  , its efficiency is doubled. The temperatures of the source and the sink are, respectively,
PhysicsThermodynamicsJEE MainJEE Main 2019 (12 Apr Shift 2)
Options:
  • A 124 ,62  
  • B 37 , 99 
  • C 99 , 37 
  • D 62 ,124 
Solution:
1349 Upvotes Verified Answer
The correct answer is: 37 , 99 
η=1-TsinkTsource
16=1-T1T2 ….(1)
13=1-T1-62T2 ….(2)
From equation (1) and (2)
T2=372 K or 99 
And T1=310 K or 37 

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