Which of the following pairs have same dimensions – (a) Torque and work (b) Angular momentum and work (c) Energy and moment of inertia (d) Light year and wavelengths
Answer & explanation
Correct answer: option 1
Torque and work both have dimensions equal to $[ML^2T^{-2}]$
Light year and wavelength both have dimensions same as distance = [L]
Dimension of Energy = $[ML^2T^{-2}]$
Dimension of moment of inertia = $[ML^2]$
Dimension of Angular momentum = $[ML^2T^{-1}]$