Question

Calculate the uncertainty in the velocity of an electron,if uncertainty in its position is 1.85x10^-12

Answer 1

∆x× ∆p=h÷4π

∆x× mv = h÷4π

V=h÷4π×∆x×m

V=6.6×10^-34÷4×3.14×1.85×10^-12×9.1×10^-31

V=6.6×10^9÷4×3.14×1.85×9.1

V=9.6319971×10^9