Electrons with a well-defined energy leave the electron gun and strike a double

Question

Electrons with a well-defined energy leave the electron gun and strike a double slit. An interference pattern with maxima and minima is observed on the fluorescent screen. Which of the following statements about this phenomenon is correct? A. The interference pattern is observed because each electron must go through one slit or the other. B. If one of the two slits is covered up, the interference pattern does not change. C. If the energy of the electrons is increased, the distance between the maxima and minima in the interference pattern decreases. D. The interference pattern is due to the uncertainty in the component of momentum of toe normal to the slits.

Explanation / Answer

Option D is the correct statement. The interference pattern is due to the uncertainity in the component of the momentum of the electrons normal to the slits.

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