After an Electron Has Been Accelerated Through a Potential Difference $0.15 \mathrm { kV }$

question 147

Multiple Choice

After an electron has been accelerated through a potential difference of $0.15 \mathrm { kV }$ , what is its de Broglie wavelength? $\left( e = 1.60 \times 10 ^ { - 19 } \mathrm { C } , m _ { \text {electron } } = 9.11 \times 10 ^ { - 31 } \mathrm {~kg} , h = 6.626 \times 10 ^ { - 34 } \mathrm {~J} \cdot \mathrm { s } \right)$

• A) \(1.0 \mathrm {~nm}\)
• B) \(1.0 \mathrm {~mm}\)
• C) \(0.10 \mathrm {~nm}\)
• D) \(1.0 \mathrm {~cm}\)

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