Question

some gap is left between two section of bridge.why​

Answer 1

Answer:

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Explanation:

Thermal expansion takes place due to the increase in the kinetic energy of the constituent molecules as they are heated. Thermal expansion is the reason we leave some gaps between sections of a bridge or two consecutive sections of railway tracks. ... In the case of bridges, this can also cause deflection of its sections.

Answer 2

Explanation:

The some gap is left between two section of bridge because it expand due to heat in summer it iron is expanding in summer.

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