Question

(1) Take three spheres of iron, copper and lead of
equal mass (Fig. 5.9).

(2) Put all the three spheres in boiling water
in the beaker for some time.​

Answer 1

Explanation:

Specific heat : The amount of heat energy required to raise the temperature of a unit mass of an object by 1oC .iii. According to the principle of hear exchange : Heat energy lost by the hot object = Heat energy gained by the coldobject In this activity heat absorbed by iron sphere is transmitted more in the wax hence sphere goes deepest in to wax while lead sphere absorbs less heat resulting in less transmission of heat in the wax hence sphere goes the least depth in the wax.