Which one the following is not a unit of Young's modulus ?

Options

A. `Nm^(-1)`
B. `Nm^(-2)`
C. Dyne `cm^(-2)`
D. Mega pascal

Answer

A

Explanation

(a) `Y=("Stress")/("Strain")=Nm^(-2)` or pascal (in SI system)
Y=`("dyne")/("cm"^(2))" "`(in CGS system)
Thus , `Nm^(-1)` is not the unit of Young's modulus.