The power `P` is received by a surface at temperature `T_(0)K` from a small sphere at temperature

A surface at temperature T_(0)K receives power P by radiation from a small sphere at temperature T ltT_(0) and at a distance d. If both T and d are doubled the power received by the surface will become .

A surface at temperature T_(0)K receives power P by radiation from a small sphere at temperature T ltT_(0) and at a distance d. If both T and d are doubled the power received by the surface will become .

A surface at temperature T_(0)K receives power P by radiation from a small sphere at temperature T ltT_(0) and at a distance d. If both T and d are doubled the power received by the surface will become .

Two Carnot engines A and B are operated in series. The engine A receives heat from the source at temperature T_1 and rejects the heat to the sink at temperature T. The second engine B receives the heat at temperature T and rejects to its sink at temperature T_(2) . For what value of T the efficiencies of the two engines are equal?

Two Carnot engines A and B are operated in series. The engine A receives heat from the source at temperature T_1 and rejects the heat to the sink at temperature T. The second engine B receives the heat at temperature T and rejects to its sink at temperature T_(2) . For what value of T the efficiencies of the two engines are equal?

Two carnot engines A and B are operated in series . The engine A receives heat from the source at temperature T_1 and rejects the heat to the sink at temperature T .The second engine B receives the heat at temperature T and rejects to its sink at temperature T_2 . For what value of T the efficiences of the two engines are equal?

A Black metal foil receives radiation of power P from a hot sphere at absolute temperature T, kept at a distance d. If the temperature is doubled and distance is halved, then Power will be