Problem: Part AHow does the de Broglie wavelength of an electron change if its momentum increases? a) The de Broglie wavelength of the electron increases. b) The de Broglie wavelength of the electron decreases. c) The de Broglie wavelength of the electron is unchanged. Part B How does the de Broglie wavelength of an electron change if its kinetic energy decreases? a) The de Broglie wavelength of the electron increases. b) The de Broglie wavelength of the electron decreases. c)The de Broglie wavelength of the electron is unchanged.

FREE Expert Solution

De Broglie wavelength:

$\overline{){\mathbf{\lambda }}{\mathbf{=}}\frac{\mathbf{h}}{\mathbf{P}}}$

From the equation, de Broglie wavelength is inversely proportional to the momentum.

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Problem Details

Part A

How does the de Broglie wavelength of an electron change if its momentum increases?

a) The de Broglie wavelength of the electron increases.

b) The de Broglie wavelength of the electron decreases.

c) The de Broglie wavelength of the electron is unchanged.

Part B

How does the de Broglie wavelength of an electron change if its kinetic energy decreases?

a) The de Broglie wavelength of the electron increases.

b) The de Broglie wavelength of the electron decreases.

c)The de Broglie wavelength of the electron is unchanged.