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Standard XII
Chemistry
Heisenberg's Uncertainty Principle
Question

The uncertainty in the momentum of an electron is 1.0 × 10−5 kg m s−1. The uncertainty of its position will be:
[h = 6.626 × 10−34 kg m2 s−1]

  1. 1.05 × 10−28 m
  2. 1.05 × 10−26 m
  3. 5.27 × 10−30 m
  4. 5.25 × 10−28 m

A
1.05 × 10−28 m
B
5.27 × 10−30 m
C
5.25 × 10−28 m
D
1.05 × 10−26 m
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Solution
Verified by Toppr

The uncertainty in the position of electron is
Δx=h4πΔP

=6.626×10−344×3.1416×1.0×10−5

=5.27×10−30 m.

Hence, the correct option is C

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