MHT CET Physics question

Physics Dual Nature of Matter and Radiation MHT CET

In Davisson-Germer experiment the decrease of the wavelength of the electron wave was done by [EAMCET (Med.) 2015]

(A)Keeping more distance between the anode and filament
(B)Keeping the same potential difference between anode and filament
(C)Decreasing the potential difference between anode and filament
(D)Increasing the potential difference between anode and filamentCorrect

Answer: (D)

Solution

, so the wavelength decreases only when the accelerating potential is

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Question ID VK-084779