Davisson-Germer Experiment

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Davisson-Germer Experiment: Overview

This topic covers concepts such as Davisson-Germer Experiment, Experimental Verification of Wave Nature of Matter, Wave Nature of Electrons and Diffraction of Electron.

Important Questions on Davisson-Germer Experiment

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What is the significance of Davisson- Germer experiment?

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The wave nature of electrons was verified by

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What was the purpose of Davisson-Germer experiment?

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What do you understand by diffraction of electron?

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Briefly explain the working of Davisson and Germer experiment.

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What do you mean by diffraction of electron?

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What was the purpose of Davisson-Germer experiment?

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What do you mean by diffraction of electron?

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In the Davission and Germer experiment, what is the phenomenon of the electrons that is observed?

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Match list-I (Fundamental Experiment) with List-II (its conclusion) and select the correct option from the choices given below the list:



List-I List-II
A Franck-Hertz Experiment (i) Particle nature of light
B Photo-electric experiment (ii) Discrete energy levels of atom
C Davison-Germer Experiment (iii) Wave nature of electron
D (iv) Structure of atom

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In Davisson - Germer experiment maximum intensity is observed at

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Davisson and Germer experiment proved

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The correct relation between the angle of diffraction ϕ and the glancing angle θ in Davidson – Germer experiment will be

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Wave property of electrons implies that they will show diffraction effects. Davisson and Germer demonstrated this by diffracting electrons from crystals. The law governing the diffraction from a crystal is obtained by requiring that electron waves reflected from the planes of atoms in a crystal interfere constructively (see figure).

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If a strong diffraction peak is observed when electrons are incident at an angle i from the normal to the crystal planes with distance d between them (see figure), de Broglie wavelength λ dB of electrons can be calculated by the relationship ( n is integer)