Question

(iv) On heating metal rim
(a) expands
(b) contracts
(c) depends how much it is heated
(d) depends as the type of meted

Answer 1

On heating metal rim (a) expands

• One of the properties of metals is that metals expand on heating.
• When metals are heated , metals vibrate with more speed and this causes the atoms to slightly fall apart.
• Thermal expansion of metals is an important property.
• Hence, when metals are heated, they expand. Option (a) is correct.