Read the followin

i. Heat energy exchange takes place between the two objects only.

Because is system is isolated (has no interaction with surroundings) so no energy can flow from inside the box or come into the box.

ii. The principal which we learnt from the process is:

Heat energy lost by the hot object = Heat energy gained by the cold object.

iii. In the principle:

⇒ The cold objects gain heat energy and the hot object loses heat energy.

⇒ If the system become isolated (by using a heat resistant box), then the heat energy takes place between the two objects only.

⇒ As a result, no energy can flow from inside the box or come into the box.

⇒ In this situation, we get the following principle

Heat energy lost by the hot object = Heat energy gained by the cold object.

iv. The specific heat of the substance is measured using this principle:

⇒ The specific heat of the substance is measured by mixing method.

⇒ For this, calorimeter is used.