Question

Explain what do you understand by the de
Broglie wavelength of an electron. Will
an electron at rest have an associated de
Broglie wavelength? Justify your answer.​

Answer 1

Explanation:

Using energy conservation, KE=PE or

2m

p

2

=eV or p=

2meV

where p= momentum of electron, m= mass of electron, e= charge of electron and V= potential difference.

Now, de-Broglie wavelength λ=

p

h

=

2meV

h

=

2(9.1×10

−31

)(1.6×10

−19

)(100)

6.6×10

−34

=1.22×10

−10

m