In summers we have observed that it becomes difficult to close and open an iron door. Which of the given conclusion is incorrect?
In summers we have observed that it becomes difficult to close and open an iron door. Which of the given conclusion is incorrect?
The correct option is D The shape of the iron door changes and the change is irreversible.
Expansion on the application of heat:- When heat is absorbed by any substance it becomes larger in size.
Contraction on the removal of heat:- When heat is removed by any substance it becomes smaller in size.
Iron doors usually stuck in summers because the outside temperature increases which further increase the heat absorbed by the iron door and expands it. As the summer season ends and the outside temperature decreases, there is a loss of heat from the door and gradually the iron door gets backs to its initial shape, i.e., it contracts. Hence, this change is a reversible change.
The shape of the iron door changes and the change is irreversible.
Expansion on the application of heat:- When heat is absorbed by any substance it becomes larger in size.
Contraction on the removal of heat:- When heat is removed by any substance it becomes smaller in size.
Iron doors usually stuck in summers because the outside temperature increases which further increase the heat absorbed by the iron door and expands it. As the summer season ends and the outside temperature decreases, there is a loss of heat from the door and gradually the iron door gets backs to its initial shape, i.e., it contracts. Hence, this change is a reversible change.
