UNIT AND DIMENSIONS
4. DIMENSION
1.4 DIMENSIONS
Dimensions: The powers, to which the fundamental units of mass, length and time written as M, L and T are raised, which include their nature and not their magnitude.
For example, Area = Length x Breadth
= [ L1] × [L1] = [L2] = [M0L2T0]
Power (0,2,0) of fundamental units are called dimensions of area in mass, length and time respectively.
e.g. Density = mass/volume
= [M]/[L3]
= [ M1L-3T0]