important terms

Axioms : The self-evident truths or the basic facts which are accepted without any proof are called axiom..

Statement - A mathematical sentence which can be judged to be true or false is called a statemen..

Conductors - All metals possess a large number of free electrons. Under ordinary conditions, these electrons move randomly in such a way that the net flow of charge across any section of the metal conductor is zero. Thus a conductor is void of any charge as such. But when the free electrons are mad..

Important Thermodynamic Terms - Some common terms, which are frequently used in the discussion of energetics need to be kno..

'A specified part of the universe which is under investigation is called the system'. The system is separated from the rest of the universe by a definite (real or imaginary) boundar..

As the wave is refracted, it is bent down gradually rather than sharply. However, below the ionised layer, the incident and refracted rays follow paths that are exactly the same as they would have been if reflection had taken place from a surface located at a greater height, called the virtual heig..

If the product of three numbers in GP is given, take the term as a/r, a, ar. But if the product of the numbers is not given, the terms are in the ordinary for..

Importance of Radio Waves in Modern Communication - Radio waves are electromagnetic waves of wavelength 10 - 3 m and higher. Their frequency range is from a few kHz to nearly a few hundred MHz. The propagation of radio waves through the atmosphere is relevant in all modern forms of commun..