How Fast Must a Nonrelativistic Electron Move So Its De

question 3

Multiple Choice

How fast must a nonrelativistic electron move so its de Broglie wavelength is the same as the wavelength of a 3.4-eV photon? (m_el = 9.11 × 10^-31 kg,c = 3.00 × 10⁸ m/s,

• A) 2000 m/s
• B) 1900 m/s
• C) 1700 m/s
• D) 1600 m/s
• E) 1400 m/s

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