What Is Atomic and Mass Number?
admin Atomic Number The total number of unit positive charges present in the nucleus of an atom is known as its Atomic Number which is equal to the number of protons…
What is a black body and give the Energy density- Wavelength curve for a black body radiation at different temperatures and explain its characteristics.
What is a black body? A body which absorbs all the radiations falling at its surface is called a black body. A black body is also a perfect emitter .i.e.…
What is Quantum Theory of Radiation?
The distribution of energy in the spectrum of radiations of a hot body cannot be explained by applying the classical concepts of physics. Max Planck gave an explanation to this…
What is Photoelectric Effect?
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…