Planck's Constant Is H = 6

question 1

Multiple Choice

Planck's constant is h = 6.6 * 10^-34 Js and the electron mass is 9.1* 10^-31 kg.The de Broglie wavelength of an electron whose speed is 10⁸ m/s is

• A)5.9 * 10^-56 m.
• B)1.5 * 10^-19 m.
• C)7.3 * 10^-12 m.
• D)1.4 * 10¹¹ m.

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