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Which of the following observations was made in the Davisson-Germer experiment that led to the confirmation of the wave-particle duality of matter?

 

Option: 1

Diffraction pattern observed when electrons were scattered from a crystal lattice

 


Option: 2

Continuous spectrum observed when electrons were passed through a metal foil

 


Option: 3

Interference pattern observed when electrons were passed through a double-slit

 


Option: 4

 Scattering pattern observed when electrons were passed through a gas

 


Answers (1)

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The Davisson-Germer experiment provided evidence for the wave-particle duality of matter. In this experiment, a beam of electrons was directed at a nickel crystal lattice, and the scattered electrons were observed using a fluorescent screen. The experiment revealed a diffraction pattern, which was similar to the diffraction pattern observed when light is diffracted through a crystal lattice. This observation confirmed that electrons, which were previously believed to be particles, also exhibit wave-like behavior.  

Option (b) is incorrect because passing electrons through a metal foil produces a continuous spectrum, similar to the spectrum of light emitted by a hot object, and does not provide evidence for the wave-particle duality of matter.

Option (c) is incorrect because the double-slit experiment is typically used to demonstrate the wave-like behavior of light, not electrons.

Option (d) is incorrect because passing electrons through a gas produces a scattering pattern, which is not related to the wave-particle duality of matter.

 

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