The mass of an electron is $9.11 \times 10^{-31} \ kg$,and the Planck constant is $6.626 \times 10^{-34} \ J \ s$. The uncertainty involved in the measurement of velocity within a distance of $0.1 \ \mathring{A}$ is:

  • A
    $5.79 \times 10^5 \ m \ s^{-1}$
  • B
    $5.79 \times 10^6 \ m \ s^{-1}$
  • C
    $5.79 \times 10^7 \ m \ s^{-1}$
  • D
    $5.79 \times 10^8 \ m \ s^{-1}$

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