10. Efficiency of Carnot engine is 100% if
(a) T2 =273K (b) T2 =0 K
(c) T1 =273K (d) T1 =0 K
Answer-b
(5)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (123)