A heat engine is supplied with 800 kJ/s of heat at 600 K and rejects at 300
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A heat engine is supplied with 800 kJ/s of heat at 600 K and rejects at 300 K . For the process to be reversible, heat rejected is :
(a) 200 kJ/s
(b) 400 kJ/s
(c) 500 kJ/s
(d) 600kJ/s
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