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Question
How will the de-Broglie wavelength associated with an electron be affected when the accelerating potential is increased? Justify your answer.
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Solution
The electron's speed increases as the accelerating potential increases. The electron's momentum increases, and the wavelength decreases according to the de-Broglie wavelength formula. As a result, the de-Broglie wavelength of the electron will decrease.
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The equation λ = `1.227/"x"` nm can be used to find the de Brogli wavelength of an electron. In this equation x stands for:
Where,
m = mass of electron
P = momentum of electron
K = Kinetic energy of electron
V = Accelerating potential in volts for electron
How will the de-Broglie wavelength associated with an electron be affected when the velocity of the electron decreases? Justify your answer.
