$A$ golf ball of mass $m$ has a speed of $50 \ m \ s^{-1}$. If the speed can be measured within an accuracy of $2 \%$,the uncertainty in the position is

  • A
    $\frac{h}{4 \pi m}$
  • B
    $\frac{h}{16 \pi m}$
  • C
    $\frac{h}{4 \pi m} \times 10^3$
  • D
    $\frac{h}{16 \pi m} \times 10^3$

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