Question

The length of a rail is 10 m and that of another is 20 m. The coefficient of linear expansion of steel is 0.000012 /°C and the variation in temperature at the given place is 15 °C. Find the gap that should be provided between the rails to allow the expansion in summer. ​

Answer 1

Answer:

Answer ⤵️

Gap left = Change in length on heating

Gap=Initial length×Coefficient of linear expansion×change in temperature

Gap=10×0.000012×15m

⟹Gap=0.0018 m

Explanation:

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Answer 2

Answer:

Gap left = Change in length on heating

Gap=Initial length × Coefficient of linear expansion ×change in temperature

Gap   =      10×0.000012 × 15m

⟹ Gap    =  0.0018 m

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