Question

The fundamental unit which has same power in the dimensional formula of surface tension and velocity ?

• A. Mass
• B. Length
• C. Time
• D. None

Answer 1

The correct option is D None

Surface tension is force per unit length , hence its dimensions are $\frac{ML{T}^{-2}}{L}=\left[M{T}^{-2}\right]$
Dimensions of velocity are $\left[L{T}^{-1}\right]$. Thus none has the same power.