Why are sleepers used below the rails?

Explain the following : (a) It is easier to cut with a sharp knife than with a blunt one. (b) Sleepers are laid below the rails.

Explain why are there gaps between the rails?

Explain why are there gaps between the rails?

Assertion : Railways tracks are laid on small sized wooden sleepers. Reason : Small sized wooden sleepers are used so that rails exert more pressure on the railway track. Due to which rail does not leave the track

Explain why are there gaps between the rails? Explain what will happen if there is no gap

(a) Whi are wide wooden sleepers kept below railway lines? (b) Whi does a balloon not collapse under atmospheric pressure?

Why are gaps left in between rails, while laying a railway line? Explain.