MHT CET Physics question

Wrong statement in connection with Davisson Germer experiment is

(A)The inter-atomic distance in nickel crystal is of the order of the de-Broglie wavelength
(B)Electrons of constant energy are obtained by the electron gun.
(C)Nickel crystal acts as three dimensional diffracting grating.
(D)Davisson-Germer experiment is an interference experiment.Correct

Answer: (D)

Solution

Statements (a), (b) and (c) are true: the atomic spacing in nickel (about 2 A) is comparable with the electron wavelength, the electron gun gives electrons of fixed energy and the crystal

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Question ID VK-084458