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Question:

In an atom, an electron is moving with a speed of 600 m/s with an accuracy of 0.005?

5.01×10𕒷m

3.84×10𕒷m

1.92×10𕒷m

1.52×10𕒸m

Solution:

Step 1: Heisenberg's uncertainty principle
ΔxΔp≥h/4π
Δx×mΔv≥h/4π
Δx≥h/4π mΔv (1)
Step 2: Certainity in the Position of electron (Δx)
Here,Δv=0.005