$\left[ {{\rm{ML}}{{\rm{T}}^{ - 2}}} \right]$

$\left[ {{{\rm{M}}^0}{{\rm{L}}^0}{{\rm{T}}^0}{{\rm{heta }}^{ - 1}}} \right]$

Dimensionless

None of these

$\frac{{{h^2}}}{{{e^2}}}$

$\frac{{{h^2}}}{e}$

$\frac{h}{{{e^2}}}$

$\frac{h}{e}$

Frequency, angular frequency and angular momentum

Surface tension, stress and spring constant

Acceleration, momentum and retardation

Work, energy and torque

${c^2}{\left[ {G\frac{{{e^2}}}{{4\pi {\varepsilon _0}}}} \right]^{1/2}}$

$\frac{1}{{{c^2}}}{\left[ {\frac{{{e^2}}}{{G4\pi {\varepsilon _0}}}} \right]^{1/2}}$

$\frac{1}{c}G\frac{{{e^2}}}{{4\pi {\varepsilon _0}}}$

$\frac{1}{{{c^2}}}{\left[ {G\frac{{{e^2}}}{{4\pi {\varepsilon _0}}}} \right]^{1/2}}$

Angular momentum and Planck’s constant

Impulse and momentum

Moment of inertia and moment of a force

Work and torque

[A]

$\left[ {{A^2}} \right]$

$\left[ {{A^{ - 1}}} \right]$

None of these

A natural unit system where certain fundamental constants are set to 1

SI units

CGS units

MKS units

Coefficient of viscosity

Surface tension

Frequency

Impulse

Mass

Length

Time

None of these

Work and energy

Angle and strain

Relative density and refractive index

Planck constant and energy

Planck’s constant and angular momentum

Impulse and linear momentum

Angular momentum and frequency

Pressure and Young’s modulus