Q161 / 180 · KCET 2007 · Physics

The dimensional formula for impulse is

  • Correct answer
    A
    $\left[\mathrm{MLT}^{-1}\right]$
  • B
    $\left[\mathrm{ML}^{-1} \mathrm{~T}\right]$
  • C
    $\left[\mathrm{M}^{-1} \mathrm{LT}^{-1}\right]$
  • D
    $\left[\mathrm{ML}^{-1} \mathrm{~T}^{-1}\right]$

Solution

Impulse $=$ force $\times$ time $=\left[\mathrm{MLT}^{-2}\right][\mathrm{T}]$ $$ =\left[\mathrm{MLT}^{-1}\right] $$

Hence, the correct answer is option: 'A'.

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