According to Clausis statement of second law of thermodynamics  (a) heat can’t be transferred from low temperature source to high temperature source  (b) heat can be transferred for low temperature to high temperature source by using refrigeration cycle.  (c) heat can be transferred from low temperature to high temperature  (d) heat can’t be transferred from low temperature to high temperature source without the aid of external energy  (e) all of the above.

According to Clausis statement of second law of thermodynamics  (a) heat can’t be transferred from low temperature source to high temperature source  (b) heat can be transferred for low temperature to high temperature source by using refrigeration cycle.  (c) heat can be transferred from low temperature to high temperature  (d) heat can’t be transferred from low temperature to high temperature source without the aid of external energy  (e) all of the above.
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Answer : d
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