Question

If the length of a body is measured in
centimetres instead of meters, the coefficient
of linear expansion
increases
decreases
remains same
decreases to $\frac{1}{{100}}$ of the
original value​

Answer 1

Increases

Explanation:

The coefficient  of linear expansion is given by the formula as :

$\alpha =\dfrac{\Delta L}{L_0\Delta T}$

$\Delta L$ is the increase in length

$L_0$ is initial length

$\Delta T$ is change in temperature

It is directly proportional to directly proportional to the increase in length. So, if the length of a body is measured in  centimetres instead of meters, the coefficient  of linear expansion increases.

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Coefficient  of linear expansion

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Answer 2

Answer: Remains same

Explanation:

the coefficient of any expansion (linear , cubical or areal) doesnot depend on the scale its measured