In practice,all heat engines have an efficien | vedclass

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(B) The correct answer is $(B)$.$A$ Carnot engine operates on a reversible cycle,which is an idealized theoretical model.In the real world,all thermod

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$A$ reversible process can never be attained in the real world

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(B) The correct answer is $(B)$.$A$ Carnot engine operates on a reversible cycle,which is an idealized theoretical model.In the real world,all thermodynamic processes involve friction,turbulence,and heat loss to the surroundings,making them inherently irreversible.Since a perfectly reversible process cannot be achieved in practice,real heat engines always have lower efficiency than the theoretical Carnot engine operating between the same two temperatures.

In practice,all heat engines have an efficiency less than that of a Carnot engine because

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