28. The efficiency of Carnot engine when source temperature is
T1 and sink temperature is T2 will be
(a) (T1 – T2)/ T1 (b) (T2 –T1 )/T2
(c) (T1 – T2)/ T2 (d) T1 /T2
Answer-a
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a