According to de Broglie, the wavelength associated with a moving particle is
Correct answer: A. h divided by its momentum
- A. h divided by its momentum
- B. h multiplied by its momentum
- C. hf
- D. c divided by its speed
Explanation
Wavelength is Planck's constant divided by mv, so heavy everyday objects have wavelengths far too small to detect while an electron's is comparable to atomic spacings. This is why electrons can be diffracted by a crystal, which was the experimental confirmation of the idea. The result gives every particle a wave aspect, completing the wave particle duality.
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About Photons and the Particle Model of Light
The particle model treats light as photons with energy E equals hf and momentum related to wavelength. Questions involve the photoelectric effect, work function, threshold frequency, stopping potential and photon energy, while distinguishing particle behaviour from the wave description of interference and diffraction.
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