Question

A solid iron ball is heated. Which one of the following will have minimum percentage increase:

Answer 1

Answer:

Density and surface area

Explanation:

When the solid ball gets heated at the high temperature its volume gets increase rapidly, but the diameter does not get much different. Here the solid ball as solid high number of inter molecular forces and has a good point of the law of momentum. When the solid ball heated more than its average heat temperature the inter molecular force will stat loosen up and thus its volume start rising.

Answer 2

A solid iron ball is heated. Density will have minimum percentage increase.

Explanation:

When the temperature of the metal increases, the particles starts to expand. The distance between the atoms start to increase.

This increases the radius of the sphere.

The volume of the ball (sphere) is given as:

Volume = 4/3 πr³

Volume ∝ r

The percentage increase in volume is given as:

ΔV/V = 3 Δr/r

Thus, volume has maximum percentage increase.

The density is given by the formula:

Density = Mass/Volume

Now,

Density 1/∝ Volume

Thus, density has minimum percentage increase.