Question

If the unit of mass is $\frac{1}{2}kg$ and that of length is $2$ m and the unit of time is one second, the unit of pressure is:

• A. 2 pascal
• B. 0.5 pascal
• C. 0.25 pascal
• D. 1.0 pascal

Answer 1

The correct option is C 0.25 pascal

$Pressure=\frac{force}{Area}$

$=\frac{M^1{L}^1{T}^{-2}}{L^2}$

$=M{L}^{-1}{T}^{-2}$

$=\frac{1}{2}\times \frac{1}{2}\times \frac{1}{(1{)}^2}\frac{kg}{m{s}^2}$

$=\frac{1}{4}=0.25pascal$