A brass disc just fits inside the hole of an iron plate. To loosen the disc from the hole easily, which of the following operations would be more convenient? (coefficient of linear expansion of brass is more than that of iron).

A brass disc just fits inside the hole of an iron plate. To loosen the

1.	A brass disc just fits inside the hole of an iron plate. To loosen the disc from the hole easily, which of the following operations would be more convenient? (coefficient of linear expansion of brass is more than that of iron).
Answer» the junction should be HEATED the junction should be cooled the junction should be HAMMERED WITHOUT heating or COOLING it the junction should be heated first and then it should be dipped in water Answer :B