Which of the following pair has same dimensions ?

Options

A. Current density and charge density
B. Force constant and surface energy
C. Angular momentum and momentum
D. Moment of a force and force constant.

Answer

B

Explanation

Force constant `=F//l=ML^(0)T^(-2)`
Surface Energy`=("Energy")/("area")`
`=(ML^(-2)T^(-2))/(L^(2))`
`ML^(0)T^(-2)`
Hence`(b)` is the correct choice.