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Question

The Davisson-Germer experiment that first demonstrated the wave nature of matter used electrons accelerated to 54 V. Determine the wavelength (in A) of the electrons in the Davisson-Germer experiment. (Answer upto 2 decimal places)


Solution

Method - I
λ=hp=h2mK=h2meVsλ=6.63×10342×9.1×1031×1.6×1019×54
λ=1.67A
Method - II
λ=12.27vA
λ=12.2754
=1.67A

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