Question

''Even
if the unit
of length is changed say to matre or inch the numerical value alpha will remain unchanged''. Justify.
१​

Answer 1

question :

The numerical value of coefficient of linear expansion is independent of units of

(a) length

(b) temperature

(c) area

(d) mass

answer :

Since unit of coefficient of linear expansion depends only on temperature therefore, option (D) is correct.