Question

Uncertainty in position of an electron is 1mm .calculate it's uncertainty in velocity Given h( plank constant)

Answer 1

Δx·Δp = h/4π

Also, p=mv ⇒ Δp=mΔv

Therefore, Δx·Δv = h/4πm

1/10² * Δv = h/4πm ⇒ Δv = 6.626*10⁻³⁴ * 10²/ 4 * 3.14 * 9.1 * 10⁻³¹

                                   Δv = 5.7 * 10⁻1

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