PhysicsHardHigh School (11–12)Modern Physics › Dual Nature of Radiation and MatterBoard ExamAPA-LevelIB
Created by StemPy LabWhich observation needs the wave nature of electrons to explain it?
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← Electrons leave a gun after being speeded up through 245 V. What is their de Broglie wavelength? Use λ = 1.227/√V nm.A proton and a helium nucleus (mass four times larger, charge twice as large) are each speeded up from rest by the same voltage. What is the ratio of the wavelength of the proton to that of the helium nucleus? →
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