Structure of Atomic Nucleus :- The atomic nucleus is the small, dense region consisting of protons and neutrons at the centre of an atom, discovered in 1911 by Ernest Rutherford based on the Geiger Marsden gold foil experiment. Proton :- A Proton is a subatomic particle, symbol ‘p‘ or p⁺ with a positive charge of…
Davisson and Germer Experiment :- The wave nature of electrons was first experimentally verified by C. J. Davisson and L. H. Germer in 1927 and independently by G. P. Thomson in 1928. The experimental arrangement consists of an electron gun which comprises of a tungsten filament ‘F’ , coated with barium oxide and heated by…
de Broglie Wavelength Equation :- In 1924 Louis de Broglie proposed that just as light has both wave like and particle like properties, electrons also have wave like particles. de Broglie proposed that the wavelength λ is associated with a particle of momentum p is given as λ = h/p Or The equation is known…
Photoelectric Effect :- When light falls on the metal surface, Some electrons near the metal surface absorb enough energy from the incident radiation to overcome the attraction of the positive ions in the material of the surface. After gaining sufficient energy from the incident light, the electrons escape from the surface of the metal into…
