Question

Calculate the uncertainty in the position of an electron, if the uncertainty in its velocity is 5.7 x 10⁵ s ms^-1.

Answer 1

Uncertainty in velocity = Av = 5.7 x 10⁵ ms^-1 

Mass of an electron = m = 9.1 x 10^-31 kg. 

Uncertainty in position = ∆x = ? 

∆x.m.∆v = h/4π

= 1 x 10^-10 m. 

Uncertainty in position = 1 x 10^-10 m.