Question

why are gaps are left between two metal rails​

Answer 1

Answer:

Gaps are left between two metal rails because solid expands on heating and contracts on cooling that's why gaps are left between metal rails.

Explanation:

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Answer 2

Answer:

The gaps left between successive rails on a 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 rails to bend sideways. That will result in train accidents.

Explanation:

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