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Sagot :
Maximum kinetic energy is 10.2
What is maximum kinetic energy?
A photoelectron's maximum kinetic energy at a particular frequency.
= ℎ − , m an x, where h is the Planck constant, f is the frequency of the incoming photon, and W is the work function of the metal surface, gives the maximal kinetic energy of a photoelectron.
Measurements have been made of the cross section for the elastic scattering of electrons with energies lower than 10.2 eV by free hydrogen atoms.
A dc electron beam crossed an atomic hydrogen beam that was chopped at a low frequency in an experiment that was similar to Bederson's in that a signal was produced from the electrons dispersed by the particles in the neutral beam.
The signal from the electrons that were dispersed by the beam appeared at the modulation frequency and at a predetermined phase, allowing for their identification.
The ratio of the hydrogen atom's and the molecule's cross sections was directly measured, and absolute values for the atomic cross section were calculated using the absolute molecular cross-section.
The experimental findings support the idea.
Electron energy in the ground state is 0.13.6
Second energy level: 3.4; overall energy level difference: 10.2
Thus, kinetic energy equals 10.2.
Therefore, we are aware that some electron kinetic energy was transmitted to the hydrogen atom during an elastic collision.
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