In 1925, before the discovery of electron diffraction, de Broglie proposed that the wavelength (lemda) of waves associated with particles (like Electron, photons) of momentum ‘p’ is given by.

CBSE Class 12 Physics Notes: Dual Nature of Radiation and Matter - Debroglie Wavelength

Illustration 2: A particle of mass m is confined to a narrow tube of length L. Find

(a) the wavelengths of the de-Broglie wave which will resonate in the tube,

(b) the corresponding particle momenta, and

(c) the corresponding energies.

Solution:

CBSE Class 12 Physics Notes: Dual Nature of Radiation and Matter - Debroglie Wavelength

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