What is Standing or stationary waves?
When two harmonic waves of equal frequency and amplitude travelling through a medium (say string) in opposite directions superimpose each... View Article
When two harmonic waves of equal frequency and amplitude travelling through a medium (say string) in opposite directions superimpose each... View Article
During the propagation of a wave through a medium, if the particles of the medium vibrate simple harmonically about their... View Article
A wave that travels from one point of the medium to another, is called a progressive wave. It can be... View Article
Phase Phase defines the position (in terms of distance from mean position) and velocity of a particle oscillating under the... View Article
It is a kind of wave motion in which the individual particles of a medium execute periodic motion about their... View Article
As the pulse in figure travels, each disturbed element of the string moves in a direction perpendicular to the direction... View Article
In the eighteenth centuries of Thomson very little is known about atom. Thomson was the first to prove that the... View Article
Rutherford model was based on the number and reflecting angle of the alpha particle (helium ion). The reflecting is because... View Article
Objections to Thomson model of an atom: i) It is only a proposal without any valid experimental observation. ii) Cathode... View Article
Thomson postulated that atom is: i) A spherical ball like substance with an average radius of about 10-10 ii) The... View Article
Answer: Thomson atomic model was proposed by William Thomson in the year 1900. This model explained the description of an... View Article
Thomson passed a very high electric charge in a vacuum tube containing different gases. He observed a flow of identical... View Article
Relation between relative permeability and magnetic susceptibility. B = B1 + BH = μ0I + μ0H B = μ0 (I... View Article
The paramagnetic materials will be in its magnetic state after a fixed temperature this particular temperature is called Curie temperature.... View Article
Magnetic material can be classified as paramagnetic diamagnetic and ferromagnetic substances on the basis of their magnetic susceptibility. Diamagnetic materials-... View Article
Formula: Xm=I/H It is the ratio of two quantities with the same units, so magnetic susceptibility has no unit. The... View Article
Magnetic susceptibility gives the measure of a quality with which a material can be magnetized by magnetizing field. It is... View Article
Frequency of the emitted radiation \(\begin{array}{l}=v=Rtimes {{Z}^{2}}left{ frac{1}{n{{1}^{2}}}-frac{1}{n{{2}^{2}}} right}Hz\end{array} \) \(\begin{array}{l}=Rtimes {{1}^{2}}left{ frac{1}{{{1}^{2}}}-frac{1}{{{3}^{2}}} right}frac{8}{9}R\end{array} \)
It is a possibility that helium ion combine with electrons of gold atom to produce He+ and neutral gold atoms.... View Article
Rutherford accepted Thomson’s model, of spherically shaped atom. But the concept of embedded electrons on a positively charged sphere was... View Article