Question

The property of expansion and contraction of metals is used to Choose correct option
1.fix wooden handle in iron ring 2.fix wooden handle in plastic blades
3.fix plastic rim over wooden wheel 4.both 1 and 2

Answer 1

Answer:

For fixing the metal rim on a wooden wheel of a cart, the metal rim is made slightly smaller than the wooden wheel. On heating, the rim expands and fits onto the wheel. Cold water is then poured over the rim, which contracts and fits tightly onto the wheel.