its conclusion for

Thus, this chapter on refraction helps us understand many natural phenomena like the twinkling of stars, the sparkling of diamonds, mirage etc. It also throws light on the working of the human eye and the defects of visio..

Unfolding the mysteries of the dark and silent space with no known boundaries has always been a dream of the human race. The desires of man has ultimately been accomplished through the exploration of space using various space launching vehicles, space probes and satellites. Contributions made by US..

The discovery of gravitation by Sir Isaac Newton, due to his observation of the falling apple, explained the movements of planets and satellites not only in our solar system but also in other systems as well. It explained why the Earth and other planets where spherical or nearly spherical in shape...

This completes the five chapters under Unit-1 which has taught all those items (such as bricks, mortar, stores, etc., needed for construction of a house) which are the building blocks for observing, studying, understanding and developing the knowledge of science in general and physics in particular..

Rutherford's alpha particle scattering experiment explained the structure of atom and the size of nucleus. The Bohr's model explained the hydrogen spectrum. Radioactivity occurs due to nuclei being unstable resulting in the emission of three types of radiations having different properties. The bind..

Principle of electrostatics and electromagnetism play a very vital role in all modern scientific developments. Coulomb's law may be regarded as merely a special case of Gauss' law or we can say Gauss's law is generated form of Coulomb's law. Gauss' law makes it possible to calculate in a very simpl..

There has been considerable development in our day to day life due to study and application of Conductors, Insulators, and Capacitors..

The magnetic field B is a) Proportional to the current I. b) Inversely proportional to the distance d c) The field has the same value on a circle of radius 'a'. Hence the magnetic field around the wire is in form of concentric circles. d) When a 0, the value of magnetic field strength becomes la..

The two energy bands in solids are valence band and the conduction band. Depending on the gap between the two bands, solids are classified as conductors, insulators and semiconductors. Semiconductors are those whose conductivity can be increased by doping and also by increasing the temperature. Dop..

Gravitational force between two objects of ordinary size is very small, while the force is very large when atleast one of the objects is massiv..