If uncertainty in the position of an electron is zero, the uncertainty in it's momentum is?
Correct answer: E. Infinite
- A. 1
- B. 0
- C. 2 x π x r
- D. >h/4π
- E. Infinite
Explanation
According to Heisenberg's uncertainty principle, it is impossible to measure position x and momentum p simultaneously. Use ∆x∆p ≥ h/4π as ∆x → 0, ∆p → ∞ Here, neither uncertainty can be zero and if the position is zero the uncertainty in momentum becomes infinite.
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