question_answer 19)

An iron ball at \[40{}^\circ C\] is dropped in a mug containing water at \[40{}^\circ C\]. The heat will (a) flow from iron ball to water (b) not flow from iron ball to water or from water to iron ball (c) flow from water to iron ball (d) increase the temperature of both

Answer:

(b) As heat can only flow from higher temperature to lower temperature. Thus, the heat will not flow from iron ball to water or vice-versa.