Question

Study the following procedure and answer the questions below :

1. Take 3 spheres of iron, copper and lead of equal mass.

2. Put all the 3 spheres in boiling water in a beaker for some time.

3. Take 3 spheres out of the water. Put them immediately on a thick slab of wax.

4. Note, the depth that each sphere goes into the wax.

i) Which property of substance can be studied with this procedure?

ii) Describe that property in minimum words.

iii) Explain the rule of heat exchange with this property.

Answer 1

in this question you take three spheres of iron copper and lead voot all of them in boiling water and after heating put immediately on wax. after this iron sphere go depressed and copper sphere go deeper than the lead spear sphere
1. property of specific heat capacity is used

Answer 2

Answer:

 

(i) Specific heat.

(ii) Specific heat: The amount of heat energy required to raise the temperature of a unit mass of an object by 1∘C .

(iii) According to the rule / principle of heat exchange ,

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

Explanation:

In this activity , heat absorbed by the iron sphere is transmitted more in the wax, hence the sphere goes deepest into the wax, while the lead sphere goes deepest into the wax, while the lead sphere absorbs less heat, resulting in less transmission of heat in the wax, hence the sphere goes the least depth into the wax

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