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The value of coefficient of linear expansion depends upon-

The value of coefficient of linear expansion depends upon- Correct Answer Nature of the solid

option (1)

CONCEPT:

  • The coefficient of linear expansion of the material of the solid is defined as the increase in length per unit original length per degree rise in temperature.
    • The coefficient of linear expansion of the material only depends upon the nature of solids and independent of the liquids and gases.

EXPLANATION: 

  • When a solid is heated, then its volume also get increases. It increases in length, breadth, and thickness.
  • The increase in length of any side of a solid will depend on the (l' is Increase in length, l is original length, α is coefficient of linear expansion and ΔT is changing in temperature)

l' = l (1 + α ΔT)  

  • The proportionality constant α is called the coefficient of linear expansion.
  • Its value depends only upon the nature of the solid.
  • Hence option (1) is correct.

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