MDCAT Physics MCQ #2586

An electron moving at 2 × 10⁶ m/s has a de Broglie wavelength of... (h = 6.63 × 10⁻³⁴ J·s, m_e = 9.11 × 10⁻³¹ kg)

MDCAT Physics MCQ #2586

  1. Question 1

    Q1. An electron moving at 2 × 10⁶ m/s has a de Broglie wavelength of... (h = 6.63 × 10⁻³⁴ J·s, m_e = 9.11 × 10⁻³¹ kg)

    • A) 3.64 nm
    • B) 0.364 nm
    • C) 3.64 pm
    • D) 0.364 pm

    Answer: 3.64 nm

    Explanation: λ = h/(mv) = 3.64 nm. Option B divides by 1000 incorrectly.