What is Photoelectric Effect?
admin This is an effect observed by Sir J.J Thompson while performing some of his famous experiments. He observed that electrons are ejected by a metal surface when light of a…
Explain the phenomenon of photoelectric effect on the basis of quantum theory of radiations by Max Planck.
The Quantum Theory of Radiations by Max Planck can explain the photoelectric effect very well. Max Planck says that light is made of bundles of energy known as photons, energy…
How the Einstein photoelectric equation was tested?
It was Robert Millikan who tested the Einstein photoelectric equation. He first calculated the kinetic energy gained by the emitted electrons for a number of frequencies by applying an opposing…
Prove that Light has a dual nature?
Well it is very much evident that photoelectric effect can only be explained if particle nature of light is considered. But there are some phenomenons like diffraction, polarization of light…
Explain the Bohr Theory of hydrogen atom
There was one major objection to the Rutherford model of atom and Bohr was the one to point it out. So while giving his Theory of hydrogen atom, he took…
Explain the spectrum of Hydrogen
According to Bohr, when an electron from its initial stationary orbit with n= ni jumps to another (lower) stationary orbit with n=nf, it emits energy equal to the difference between…
Explain in detail how Sommerfeld extended the Bohr Theory
Bohr was able to calculate the radii as well energies of the stationary orbit around the nucleus in an atom and those calculated values were found to be in a…
What were the objections to the Bohr model of atom?
Though the Bohr and sommerfeld were able to explain the atomic spectra of hydrogen and like species but still there were many anomalies to their theory. Both Bohr’s theory and…
Explain the dual nature of electron?
In 1905, it was Einstein who suggested the concept of light having a dual nature; particle and wave nature. In a similar way, Louise de Broglie suggested that electron also…
What is the difference between matter and electromagnetic waves?
Electromagnetic waves are very much different from the matter waves and in many ways. a) Speed of matter waves is very much less than the speed of electromagnetic waves. b)…