# In an atom, an electron is moving with a speed of 600 m/s with an accuracy of $0.005 \%$. Certainity with which the position of the electron can be located is ($h = 6.6 \times 10^{-34} \; kg \; m^2\; s^{-1}$, mass of electron, $e_m = 9.1 \times 10^{-31} kg$)
( A ) $1.52 \times 10^{-4}$ m
( B ) $1.92 \times 10^{-3}$ m
( C ) $3.84 \times 10^{-3}$ m
( D ) $5.10 \times 10^{-3}$ m