Q. The physical quantities not having same dimensions are
A) Torque and work
B) Momentum and Planck’s constant
C) Stress and Young’s modules
D) Speed and $\left( \mu_{0}\varepsilon_{0} \right)^{- 1/2}$
Explanation
Planck’s constant $(h) = J - s = \left\lbrack ML^{2}T^{- 2} \right\rbrack\lbrack T\rbrack = \left\lbrack ML^{2}T^{- 1} \right\rbrack$ Linear momentum $(p) = kg - {ms}^{- 1}$ $\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ = \lbrack M\rbrack\lbrack L\rbrack\lbrack T\rbrack^{- 1} = \left\lbrack MLT^{- 1} \right\rbrack$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.