If the position of the electron is measured within an accuracy of + 0.002 nm, calculate the uncertainty in the momentum of the electron. Suppose the momentum of the electron is h/4πm × 0.05 nm, is there any problem in defining this value.
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Answer :
- Uncertainty in momentum = 2.638 × 10⁻²³ kg ms⁻¹.
Step-by-step explanation :
Given that,
- Uncertainty in the position of the electron, Δx = 0.002 nm = 2 × 10⁻³ nm = 2 × 10⁻¹² m.
Also,
- Planck's constant, h = 6.626 × 10⁻³⁴ kgm²s⁻¹.
Using uncertainty principle, we get,
Putting the given values, we get,
Now, actual momentum (as per given in the question) =
Putting the values, we get,
Hence, it cannot be defined as the actual magnitude of momentum is smaller than the uncertainty.
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