What Is the Ratio of the De Broglie Wavelength for an Electron

question 22

Multiple Choice

What is the ratio of the de Broglie wavelength for an electron (m_e = 9.1 × 10^-31 kg) moving at a speed of 1.70 × 10⁴ m/s and a ball of a mass = 0.5 kg moving at a speed of 13 m/s? [h = 6.63 × 10^-34 Js]

• A)1.1 × 10²⁷
• B)1.4 × 10²⁵
• C)1.3 × 10^-28
• D)1.3 × 10^-38

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