. Which of the following pairs does not have similar dimensions?

: Dimensional formula of surface tension

$\mathrm{Surface}\mathrm{tension}=\frac{\mathrm{Force}}{\mathrm{Length}}=\frac{\left[{\mathrm{MLT}}^{-2}\right]}{\left[\mathrm{L}\right]}=\left[{\mathrm{MT}}^{-2}\right]$

Dimensional formula of tension = $\left[{\mathrm{MLT}}^{-2}\right]$

Hence, dimensions of surface tension and pressure is $\left[{\mathrm{ML}}^{-1}{\mathrm{T}}^{-2}\right]$

Dimensional formula of Planck’s constant and angular momentum is $\left[{\mathrm{ML}}^2{\mathrm{T}}^{-1}\right]$

Also dimensional formula of angle and strain is same.