Answered: ** 19. Electrons are accelerated… | bartleby

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** 19. Electrons are accelerated through a potential difference of 100 volts and allowed to
impinge on a grating with 3-nm slit separations.
100 V
a) Find the momentum of the electrons in the beam. [Hint: Remember that one way to
write kinetic energy is KE = /2mv² = p²/2m.]
Grating -
b) Find the de Broglie wavelength of the electrons.
c) What will be the angular location of the first-order bright fringe in the electron
interference pattern?

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