Doppler’s Effect of Light The phenomenon of apparent change in frequency of the light due to relative motion between the source of light and the observer is called Doppler’s effect. If = actual frequency, = apparent frequency, speed of source with respect to the stationary observer, speed of light. 1) Source of light moves towards Read more about Doppler’s Effect of Light[…]
Faraday’s Law of Electrolysis The process of carrying out nonspontaneous reaction under the influence of electric energy is termed as electrolysis. The relationship between the quantity of electric charge passed through an electrolyte and the amount of the substance deposited at the electrodes was presented by Faraday in 1834 in the form of laws of Read more about Faraday’s Law of Electrolysis[…]
Magnetic Field Due to a Straight Wire The Biot – Savart law allows us to calculate magnetic field due to steady current through a small element of wire. Since direction of magnetic field due to different current elements of an extended wire carrying current is not unique. Magnetic field due to a current carrying wire Read more about Magnetic Field Due to a Straight Wire[…]
Factors Affecting Surface Tension Surface tension is a property of a liquid surface displayed by its acting as if it were a stretched elastic membrane. This phenomenon can be observed in the nearly spherical shape of small drops of liquids and of soap bubble. Because of this property, certain insects can stand on the surface Read more about Factors Affecting Surface Tension[…]
Cyclic and Non – Cyclic Process A cyclic process consists of a series of changes which return the system back to its initial state. In non – cyclic process the series of changes involved do not return the system back to its initial state. (1) In case of cyclic process as i.e. change in internal Read more about Cyclic and Non – Cyclic Process[…]
Nature of Work Done When a force acts on an object and the object actually moves in the direction of force, then the work is said to be done by the force. Work done by the force is equal to the product of the force and the displacement of the object in the direction of Read more about Nature of Work Done[…]
Important values of Alternating Quantities 1) Peak Value: The maximum value of alternating quantity (i or V) is defined as peak value or amplitude. 2) Mean square value: The average of square of instantaneous values in one cycle is called mean square value. It is always positive for one complete cycle. E.g. (or) . 3) Read more about Important values of Alternating Quantities[…]
Series Combination of Metallic Rods 1) Series Combination: Let n slabs each of cross sectional area, lengths and conductivities respectively be connected in the series. i) Heat Current: Heat current is the same in all the conductors. i.e., , ii) Equivalent thermal resistance: , iii) Equivalent thermal conductivity: It can be calculated as follows, from Read more about Series Combination of Metallic Rods[…]
Specific Heat of Solids For solids and liquids, we define the specific heat capacity as the quantity of energy that will raise the temperature of unit mass of the body by 1K. When a solid is heated through a small range of temperature, its volume remains more or less constant. Therefore, specific heat of a Read more about Specific Heat of Solids[…]
Elastic Properties of Matter 1) Elasticity: The property of matter by virtue of which a body tends to regain its original shape and size after the removal of deforming force is called as Elasticity. 2) Plasticity: The property of matter by virtue of which it does not regain its original shape and size after the Read more about Elastic Properties of Matter[…]