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Photoelectric Effect:
The phenomenon of emission of electrons from a metal surface when exposed to a light of suitable frequency is known as photoe
Dual nature of matter – radiation-
The wave associated with a particle is called matter wave or de Broglie wave.
Experimental Verification of De-Broglie waves:
The wave nature of a moving particle is explained by Davisson & Germer.
A beam of ele
Photoelectric Cell are of 3 types:
1. Photo emissive cell
2. Photo conductive cell
3. Photo voltaic cell
The cell in which energy of the photons if incident light is utilized to obtain photoelectrons and hence the photoelectric curre
The phenomenon like interference, diffraction and the polarization, etc can be satisfactorily can be explained only on the basis of wave nature of light, on t
Electron Emmision-The liberation of electrons from the surface of a metal due to any reason is known as Electron Emission.
If we atke a piece
De-Broglie’s Equation:-
According to de-Broglie a moving particle can be associated with a wave. So the waves associated with a moving materi
Photons:- Electromagnetic radiation carry energy in the form of packets or bundles known as photons or quanta.
Properties of Photons:-
Evidences in Favors of Bohr model
Stability of an atom – According to Bohr electron revolving around the nucleu
Genetic code and regulation of gene expression:
Genetic Code: The relationship between the sequence of nucleotid
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