Question

In the following, the one which has not been expressed properly is:

• A. $\frac{Stress}{Strain}=N{m}^{-2}$
• B. Surface tension $={Nm}^{-1}$
• C. Energy $={Kgms}^{-1}$
• D. Pressure $={Nm}^{-2}$

Answer 1

The correct option is C Energy $={Kgms}^{-1}$

$\frac{stress}{strain}=\frac{M^1{L}^1{T}^{-2}}{L^2}=\frac{force}{Area}$

Surface Tension $=\frac{force}{length}=N{m}^{-1}$

Energy $=M^1{L}^2{T}^{-2}=kg{m}^2{s}^{-2}$

Pressure $=\frac{force}{Area}=N{m}^{-2}$