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NEET Physics QUESTION #7230
Question 1

If force ($F$), velocity ($V$), and time ($T$) are taken as fundamental units, then the dimensions of mass in this system are:

  • $[FV^{-1}T^{-1}]$
  • $[FV^{-1}T^{1}]$
  • $[FVT^{-1}]$
  • $[FV^{-1}T]$✔️
Correct Answer Explanation

From Newton's second law: $F = ma = m\dfrac{v}{t}$

So $m = \dfrac{Ft}{v}$

In terms of fundamental units F, V, T:

$[m] = \dfrac{[F][T]}{[V]} = FV^{-1}T$