Question: Which of the following has the dimensions of pressure? [PMT/NEET-1990]
a. $[MLT^{-2}]$
b. $[ML^{-1}T^{-2}]$
c. $[ML^{2}T^{-2}]$
d. $[M^{-1}L^{-1}]$

Solution
Pressure = Force / Area
$
= \frac{MLT^{-2}}{L^{2}} = ML^{-1}T^{-2}
$

Answer
b. $[ML^{-1}T^{-2}]$