A) \[[M{{L}^{2}}{{T}^{-1}}]\]
B) \[[M{{L}^{2}}{{T}^{-2}}]\]
C) \[[ML{{T}^{-2}}]\]
D) \[[M{{L}^{-1}}{{T}^{-1}}]\]
Correct Answer: B
Solution :
\[\tau =\overrightarrow{r}\times \overrightarrow{F}\] \[|\tau |=|r|\times |F|\] \[=[L][ML{{T}^{-2}}]=[M{{L}^{2}}{{T}^{-2}}]\]
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