Physical World Units and Measurements - Result Question 11
11. If force (F), velocity (V) and time (T) are taken as fundamental units, then the dimensions of mass are :
[2014]
(a) $[FV T^{-1}]$
(b) $[FV T^{-2}]$
(c) $[F V^{-1} T^{-1}]$
(d) $[F V^{-1} T]$
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Answer:
Correct Answer: 11. (d)
Solution:
- (d) Force $=$ mass $\times$ acceleration
$\Rightarrow$ Mass $=\frac{\text{ force }}{\text{ acceleration }}$
$=\frac{\text{ force }}{\text{ velocity } / \text{ time }}=[F V^{-1} T]$
