Physics

Electricity - Current Electricity - Basics * Electricity current is uniform flow of charges in a particular direction. * The rate of flow of charge o uniform motion of electrons: (I = Q/t) * Potential difference is the work done in moving a unit charge between two points in an electric field against the direction ... Read more

Dispersion and Recombination of White Light * The angle between the two refracting faces of a prism is called the angle of the prism or refracting angle ‘A’. * The angle between the incident ray and the emergent ray is called the angle of the deviation‘d’. The angle of deviation depends on:    *  The ... Read more

Work and Energy - Work * Work done by force acting on an object is equal to the magnitude of the force multiplied by the displacement of the object in the direction of the force. Condition for work to be done:    *  A net force act on an object.    *  The object must ... Read more

Structure of Atoms - Structure of An Atom * An Atomic Number is the number of protons in an atom. * The arrangement of electrons in various energy levels of an atom known as electronic configuration * The maximum number of electrons in any energy level of the atom is given by 2n2. * The ... Read more

Matter In Our Surroundings - Inter Conversion of States of Matter * Inter conversion of states is the phenomenon of the change of matter from one state to another and back to original state, by altering the temperature. * The process where a solid changes to a liquid is called melting. * Latent heat of ... Read more

Work And Energy - Energy * Energy is defined as the capacity to do work. * The various forms of energy include kinetic energy, potential energy, thermal or heat energy, electrical energy and chemical energy. * Energy stored in an object due to its position or place is known as potential energy. * The gravitational ... Read more

Sound - Production and Propagation of Sound * Sound is form of energy that produces the sensation of hearing in our ears. * Sound is produced due to the vibration of objects. * Intensity of sound is the amount of sound energy incident per unit time per unit area. * Sound propagates through a medium. ... Read more

Light- Refraction Basics * The tendency of light to bend at the point of separation of two media is called refraction. * The ratio of velocity of light in the first medium to that in the second medium is known as the refractive index of the second medium with respect to the first medium. * ... Read more