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MCQ

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An electron and an alpha particle have the same de Broglie wavelength. What is the ratio of their velocities? (mₑ = 9.1 × 10⁻³¹ kg, m_α = 6.64 × 10⁻²⁷ kg)

Choose one · Correct answer highlighted

4 7297 Correct 1836 0.000137

vₑ/v_α = m_α/mₑ ≈ 7297.

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