Communication Systems

Communication Systems: The process of transmission and reception of information over extended distances. Elements of a communication system are the set up used in the transmission and reception of information…

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Dual Nature of Radiation and Matter

Electron Emission Radiation and Matter: The phenomenon of emission of electrons from the surface of a metal. The minimum energy needed by an electron to come out from a metal…

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Atoms: Class 12

Thomson’s model of the atom: It was proposed by J. J. Thomson in 1898. According to this model, the positive charge of the atom is uniformly distributed throughout the volume…

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Wave Optics: Class 12

Wavefront: Wave Optics The locus of all particles of the medium vibrating in the same phase at a given instant is known as a wavefront. Depending on the shape of…

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Ray Optics and Optical Instruments

Optics Ray Optics and Optical Instruments: It is the branch of physics that deals with the study of light and the phenomena associated with it. It is divided into two…

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Biodiversity and Conservation: Class 12

Biodiversity and Conservation: Biodiversity (Gk bios = life, diversity = forms) or biological diversity can be defined as the vast array of species of microorganisms, algae, fungi, plants and animals…

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