Question

An object has a mass of 6 kg and velocity of 10 m/s. The speed is measured with 5% accuracy, then find out Δx in m.

• A. 0.12676 x 10-34
• B. 0.1566 x 10-34
• C. 0.176 x 10-34
• D. 0.276 x 10-34

Answer 1

Answer:

C. 0.176 x 10-34

Speed’s uncertainty is 10 x 5/100 = 0.5 m/s. We have Heisenberg’s principle of uncertainty i.e. Δx. Δp ≥ h/4π. Δx = h/2mπ. Therefore uncertainty in position = 6.626 x 10-34 Js/12 x 3.1416 = 0.176 x 10-34.