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HomePhysics28. The efficiency of Carnot engine when source temperature is

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

(12)

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12. An ideal gas is taken through the cycle A→ B → C → A, as shown in the figure. If the net heat supplied to the gas in the cycle is 5 J, the work done by the gas in the process C → A is

(a)      – 5 J (b)  – 10 J (c)   – 15 J (d)  – 20 J Answer-a (126)

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