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HomePhysics32. An engine is supposed to operate between two reservoirs

32. An engine is supposed to operate between two reservoirs

at temperature 727°C and 227°C. The maximum possible efficiency of such an engine is

(a)  1/2                                     (b)  1/4

(c)   3/4                                     (d)  1

Ans. a

(15)

5/5 - (2 votes)

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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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