Wavelength of electron was verified by_________________?
Correct answer: B. Davisson and Germer
- A. Moseley
- B. Davisson and Germer
- C. Einstein
- D. Roentgen
Explanation
Davisson and Germer verified the wave nature and de Broglie wavelength of electrons by observing electron diffraction from a nickel crystal. Moseley studied characteristic X-ray frequencies, while Einstein explained the photoelectric effect. The likely mistake is choosing Einstein because he contributed to quantum theory generally, but he did not perform this electron-diffraction verification.
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