PhysicsHardHigh School (11–12)Modern Physics › Dual Nature of Radiation and MatterBoard ExamAPA-LevelIB
Created by StemPy LabElectrons speeded up by a voltage give a first-order peak at from a crystal. The voltage is made four times larger. At what angle is the first-order peak now?
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← 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?In a photoelectric experiment the frequency of the light is doubled. It was above the threshold before. What happens to the stopping potential? →
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