Direction of Magnetic Field The direction of magnetic field is determined with the help of the following simple laws: 1) Maxwell’s cork screw rule: According to this rule, if we imagine a right handed screw placed along the current carrying linear conductor, be rotated such that the screw moves in the direction of flow of Read more about Direction of Magnetic Field[…]
Gravitational Field Intensity The space surrounding a material body in which gravitational force of attraction can be experienced is called its gravitational field. The intensity of the gravitational field of a material body at any point in its field is defined as the force experienced by a unit mass placed at that point, provided the Read more about Gravitational Field Intensity[…]
Gravitational Mass Gravitational mass is defined as the mass of the body by virtue of the gravitational force exerted by the earth. The gravitational mass of a body is related to gravitational pull on the body. It is the mass of the material of body, which determines the gravitational pull acting upon it. If M Read more about Gravitational Mass[…]
Inertial Mass Newton’s first law of motion states that an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. Objects tend to keep on doing what they are doing. In fact, it is the Read more about Inertial Mass[…]
Chemical Effect of Current Current can produce or speed up chemical change, this ability of current is called chemical effect. 1) Electrolytes: The liquid which allows the current to pass through them and also dissociates into ions on passing current through them are called electrolytes. Ex. Solutions of salts, acids and bases in water. Those Read more about Chemical Effect of Current[…]
Significant Figures Significant figures in the measured value of a physical quantity tell the number of digits in which we have confidence. Larger the number of significant figures obtained in a measurement, greater is the accuracy of the measurement. The reverse is also true. The number of significant figures in a result is simply the Read more about Significant Figures[…]
Transition of an Electron When an electron makes transition from higher energy level having energy to a lower energy level having energy then a photon of frequency is emitted. 1) Energy of emitted radiation: , . 2) Frequency of emitted radiation: . 3) Wave number/Wavelength: Wave number is the number of waves in unit length, Read more about Transition of an Electron[…]
Properties of X – Rays X – Rays were discovered accidentally by German Scientist Rontgen in 1895. The first Nobel Prize was awarded to Rontgen in 1901. This highly penetrating electromagnetic radiation has proved radiography of metal and in medical sciences. X – Rays are basically a type of radiations. They are also sources of Read more about Properties of X – Rays[…]
Characteristics of Matter Waves According to de-Broglie a moving material particle sometimes acts as a wave and sometimes as a particle. The wave associated with moving particle is called matter wave or de-Broglie wave and it propagates in the form of wave packets with group velocity. 1) Matter wave represents the probability of finding a Read more about Characteristics of Matter Waves[…]
Matter Waves According to de-Broglie a moving material particle sometimes acts as a wave and sometimes as a particle. The wave associated with moving particle is called matter wave or de-Broglie wave and it propagates in the form of wave packets with group velocity. 1) de-Broglie wavelength: According to de-Broglie theory, the wavelength of de-Broglie Read more about Matter Waves[…]