29. An ideal heat engine working between temperature
T1 and T2 has an efficiency η, the new efficiency if both the source and sink temperature are doubled, will be
(a) η/2 (b) η
(c) 2η (d) 3η
Ans. b
(18)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (123)