Question

Justify L+L=L and L-L=L.​​

Answer 1

L+l=l

L-l=l

... M........ M....... Mm

Answer 2

Answer:

Principle of Homogeneity :

By Principle of Homogeneity, the physical quantities which have same dimensions can be added, subtracted or compared.

Here, [L] + [L] = [ L] and [L] - [L] = [L]

The two quantities can be added or subtracted,if they have same dimension or dimensional formula.