Assertion : Coefficient of performance in refrigrator may be greater than one.
Reason : Heat extracted from lower temperature reservoir.

A : Coefficient of performanceof a refreigerator is always greater than 1. R : Efficiencyof heat engine is greater than 1.

A : Coefficient of performanceof a refreigerator is always greater than 1. R : Efficiencyof heat engine is greater than 1.

If alpha is the coefficient of performance of a refrigerator and 'Q_(1)' is heat released to the hot reservoir, then the heat extracted from the cold reservoir 'Q_(2)' is

Assertion : A room can be cooled by opening the door of a refrigerator in a closed room. Reason : Heat flows from lower temperature (refrigerator) to higher temperature (room).

Can the coefficient of friction be greater than one ?

Assertion: A room can be cooled by opening the door of a refrigerator in a closed room. Reason: Heat flows from lower temperature to higher temperature.

Assetion : A refrigerator transfers heat from a lower temperature to a higher temperature. Reason: Heat cannot flow from a lower temperature to a higher temperature.

Assetion : A refrigerator transfers heat from a lower temperature to a higher temperature. Reason: Heat cannot flow from a lower temperature to a higher temperature.

Assertion : lonisation potential of Li is greater than He Reason : Zeff of Li is greater than He