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JAMB Physics 2003 Question 42

Question 42

Modern Physics

If the uncertainty in the measurement of the position of a particle is 5 × 10−10m, the uncertainty in the momentum of the particle is [h = 6.6 × 10−34Js]

  1. A.1.32 × 10−44Ns
  2. B.3.30 × 10−44Ns
  3. C.1.32 × 10−24Ns
  4. D.3.30 × 10−24Ns
Show the answer and explanation

Answer: C (1.32 × 10−24Ns)

Explanation

Using Δx × Δp ≈ h: Δp = 6.6 × 10−34 ÷ 5 × 10−10 = 1.32 × 10−24 N s.