Question 10.
Answer the following:
Which principle is used to measure the specific heat capacity of a substance?
Answer:
Principle of heat capacity:
⇒ If heat is exchanged between hot and cold object, the temperature of the cold object increases (energy gain) and the temperature of the hot object decreases (energy loss).
⇒ Until the objects attain the same value, the temperature continues to change.
⇒ If the system of both the objects is isolated and close in a heat resistant box, then no energy can flow from inside the box or come into the box.
⇒ In this condition, we get the following principle:
Heat energy lost by the hot object = Heat energy gained by the cold object.
