The units of modulus of rigidity are
The units of modulus of rigidity are
$N - m$
$N/m$
$N - {m^2}$
$N/{m^2}$
The units of modulus of rigidity are
We know that the modulus of rigidity is defined as:
$Y =\frac{\text { Stress }}{\text { Strain }}$
Since strain is a dimensionless quantity. So its unit will be same as that of stress.