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An electromagnetic wave has dual (wave–particle) nature.
Wave nature of matter
Davison and Germer experiment
Davisson–Germer electron diffraction arrangement
It was noticed that a strong peak appeared in the intensity (I) of the scattered electron for an accelerating voltage of 54 V at a scattering angle θ = 50°.
This is due to the constructive interference of electrons scattered from different layers of the regularly spaced atoms of the crystals.
From the electron diffraction measurements, the wavelength of matter waves was found to be 0.165 nm.
Effect of intensity of light on photocurrent
Effect of potential on photoelectric current
Intensity of incident radiation
Einstein’s photoelectric equation
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Ratio of magnetic dipole moment to the angular momentum for hydrogen like atoms is ( e and m are electronic charge and mass respectively)
If potential energy of an electron in a hydrogen atom in first excited state is taken to be zero, kinetic energy (in eV) of an electron in ground state will be