JEE PHYSICS MCQ: THERMAL PROPERTIES OF MATTER

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Assertion (A): In laying down a railway track a small gap is left between the ends of the two consecutive rails
Reason (R): It is to allow for the linear expansion of rails in summer.

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Correct option: A

If both (A) and (R) are true and (R) is the correct explanation of (A).

Option A is correct because the gap allows for thermal expansion of the rails in summer, preventing buckling.

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