Question

Dimensional formula $\left[\text{M L}{}^2\text{T}{}^{-3}\right]$ represents

• A. Force
• B. Power
• C. Energy
• D. Work

Answer 1

The correct option is B Power

Power is defined as time rate of energy
So $\text{Power}=\frac{\text{Energy}}{\text{time}}$
$\text{Units of Power}=\frac{\text{kg m}{}^2\text{s}{}^{-2}}{\text{s}}=\text{kg m}{}^2\text{s}{}^{-3}$
$\text{Dimensions of Power}=\text{M L}{}^2\text{T}{}^{-3}$