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Question

A proton and an alpha particle have the same de Broglie wavelength. What is the ratio of their velocities? (mₚ = 1.67 × 10⁻²⁷ kg, m_α = 6.64 × 10⁻²⁷ kg)

Options

Choose one · Correct answer highlighted

Explanation

mₚ vₚ = m_α v_α. vₚ/v_α = m_α/mₚ ≈ 4.