Starting from Rest,an Electron Accelerates Through a Potential Difference of 40

question 53

Multiple Choice

Starting from rest,an electron accelerates through a potential difference of 40 V.What is its de Broglie wavelength? (h = 6.63 x 10^-34 J*s,m_e = 9.11 x 10^-31 kg,and 1 eV = 1.60 x 10^-19 J)

• A)1.1 x 10^-10 m
• B)1.5 x 10^-10 m
• C)1.9 x 10^-10 m
• D)2.3 x 10^-10 m

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