Figure shows cyclic process. From c to b 40 J is transferred as heat from b to a, 130 J is transferred as heat, and work done is 80 J from a to c, 400 J is transferred as heat then –
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(a, d)
Δ U cycle = 0
Q net = W net
40 – 130 + 400 = W cb + W ba +W ac
W ac = 310 J
Thermal efficiency = 
= 
× 100
= 11.5 × 5
= 57.5
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