According to Heisenberg's uncertainity principle
Δx×m×ΔV=h4π
Δx= uncertainty in the position
m=9.1×10−31kg= mass of electron
ΔV=300×0.001100=0.003m/s
uncertainty in the velocity
h=6.62×10−36Js= Planck's constant
Substitute values in the above formula
Δx×9.1×10−31×0.003=6.62×10−344×3.1416
Δx=1.92×10−2m
Hence, the correct option is C