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NEET Physics QUESTION #7221
Question 1

The dimensional formula of torque is:

  • $[ML^2L^{-3}]$
  • $[ML^{-1}T^{-1}]$
  • $[ML^2T^{-2}]$✔️
  • $[ML^{-2}]$
Correct Answer Explanation

Torque $\tau = r \times F$ (moment of force)

$[\tau] = [r][F] = L \times MLT^{-2} = ML^2T^{-2}$

Note: Torque has the same dimensional formula as energy ($ML^2T^{-2}$), but they are physically different quantities. Torque is a vector while energy is a scalar.