Plz tell me this in detailed the strategy being applied here 

Asked by shrutigandha07 | 15th Apr, 2019, 08:40: PM

Expert Answer:

From second law of thermodynamics,
 
open parentheses fraction numerator increment straight T over denominator straight T subscript 1 end fraction close parentheses space equals space straight A over straight Q

straight A space equals open parentheses fraction numerator increment straight T over denominator straight T subscript 1 end fraction close parentheses straight Q

space space space space equals fraction numerator open parentheses 380 minus 280 close parentheses cross times 760 over denominator 380 end fraction

space space space space space equals 200 space kJ
760 - 200 = 560 kJ
 
Therefore,
(i) 650 kJ is irrevessible, (ii) 560 kJ is revesible and (iii) 404 kJ is impossible cycle.

Answered by Varsha | 16th Apr, 2019, 11:03: AM

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