A piece of glass is heated to a high temperature and then allowed to cool. If it cracks, a probable reason for this is the following property of glass

When a green glass heated to high temperature what it will glow ?

Which of the following is NOT the property of glass ?

Hard steel is heated to high temperature and then suddenly cooled in oil. The process is known as

If a piece of metal is heated to temperature and then allowed to cool in a room which is at temperature theta_0 , the graph between the temperature T of the metal and time I will be closest to :

A very thin metallic shell of radius r is heated to temperature T and then allowed to cool. The rate of cooling of shell is proportional to

A very thin metallic shell of radius r is heated to temperature T and then allowed to cool. The rate of cooling of shell is proportional to

A piece of blue glass heated to a high temperature and a piece of red glass at room temperature, are taken inside a dimly lit room, then