An Electron Is Accelerated from Rest Through a Potential Difference $880 \mathrm {~nm}$

question 150

Short Answer

An electron is accelerated from rest through a potential difference. After acceleration the electron has a wavelength of $880 \mathrm {~nm}$ . What is the potential difference responsible for the acceleration of the electron? \left( h = 6.626 \times 10 <sup>- 34</sup> \mathrm {~J} \cdot \mathrm { s } , m _ { \text {electron } } = 9.11 \times 10<sup> - 31</sup> \mathrm {~kg} , e = 1.6*10<sup>- 19</sup> \mathrm { C } \right)
A) $2.5 \times 10 ^ { - 6 } \mathrm {~V}$
B) $1.7 \times 10 ^ { - 6 } \mathrm {~V}$
C) $2.2 \times 10 ^ { - 6 } \mathrm {~V}$
D) $1.9 \times 10 ^ { - 6 } \mathrm {~V}$

• A) \(2.5 \times 10 ^ { - 6 } \mathrm {~V}\)
• B) \(1.7 \times 10 ^ { - 6 } \mathrm {~V}\)
• C) \(2.2 \times 10 ^ { - 6 } \mathrm {~V}\)
• D) \(1.9 \times 10 ^ { - 6 } \mathrm {~V}\)

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