Question

strain ki dimensional likhiye

Answer 1

Strain is defined as change in dimension over original dimension. Now we know dimension has the units of L thus this means it has no dimensional formula and has no units.

Strain= Change in dimension/Original dimension
Thus
Dimensional Formula of Strain= (M0L1T0)/(M0L1T0)

Dimensional Formula of Strain= M0L0T0

Now we know dimension has the units of L thus same units cancel each other leaving numeric value only. So Strain has no SI unit.

Answer 2

the strain is dimensional less as it has no unit.

strain =extension in length/ original length
so unit =m/m
as have no unit it has no dimension
or dension of it is [Mⁿ LⁿTⁿ]
where n =0

hope dis help