Question

there is a gap in the joints of the rails because ________​

Answer 1

Explanation: The gaps left between succesive rails on railway track, the reason is that the rails expand in summer. The gap is provided to allow for this expansion. If no gap is left, the expansion in summer will cause the rail to bend sideways . That will result in train accidents.

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Answer 2

Answer:

Explanation:

Solution-

As we know iron expand on heating and contract on cooling so rails are made up of iron and there is a gap between rails to expand and contract in summers and winters.

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