Starting from Rest,an Electron Accelerates Through a Potential Difference of 67

question 38

Multiple Choice

Starting from rest,an electron accelerates through a potential difference of 67 V.What is its de Broglie wavelength? (h = 6.63 × 10−³⁴ J⋅s,m_e = 9.11 × 10−³¹ kg,and 1 eV = 1.60 × 10−¹⁹ J)

• A) 1.1 × 10−¹⁰ m
• B) 1.5 × 10−¹⁰ m
• C) 1.9 × 10−¹⁰ m
• D) 2.3 × 10−¹⁰ m

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