Question

The dimensions of potential energy of an object in mass, length and time are respectively

• A. 2, 2, 1
• B. 1, 2, - 2
• C. -2, 1, 2
• D. 1, - 1, 2

Answer 1

Answer: (B)

The dimensional formula of energy
$E=\left[M{L}^2{T}^{-2}\right]$
So, dimensions of
i) Mass $\to 1$
ii) Length $\to 2$
iii) Time $\to -2$