Question

Which of the following has the dimensions of pressure?

• A. $[ML{T}^{-2}]$
• B. $[M{L}^{-1}{T}^{-2}]$
• C. $[M{L}^{-2}{T}^{-2}]$
• D. $[M^{-1}{L}^{-1}]$

Answer 1

Answer: (B)

Pressure $=\frac{\text{Force}}{\text{Area}}$.
Therefore dimensions of pressure
$=\frac{[ML{T}^{-2}]}{[L^2]}=M{L}^{-1}{T}^{-2}$