Physical World Units And Measurements Ques 29

29. The dimensional formula of torque is

[1989]

(a) $[ML^{2} T^{-2}]$

(b) $[MLT^{-2}]$

(c) $[ML^{-1} T^{-2}]$

(d) $[ML^{-2} T^{-2}]$

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Answer:

Correct Answer: 29.(a)

Solution:

  1. (a) $\tau=$ Force $\times$ distance

So dimensional formula,

$ =[MLT^{-2}][L]=[ML^{2} T^{-2}] $