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In a pure semiconductor, concentration of electrons in conduction band is equal to the concentration of holes in valence band. In the process of conduction when an electric field is applied, the electron moves in the opposite direction of the field and occupies the position of nearest hole, so that, a new hole is created in the place of electron.
This process of electron movement and hole movement continues in the semiconductor substance. In the applied electric field, electrons move towards positive terminal of the battery and hole moves towards negative terminal of the battery.
Q. Give basic postulate of special theory of relativity? A plane-convex lenses L of large radius of curvature with its convexities is placed on a plane glass plate P. When ligh
Determination of Analyte Concentration: One of the most common applications of spectrophotometry is to determine the concentration of an analyte in a solution. There is a rela
how to find ratio of magnetic dipole moment of bar magnet
Starting from Maxwell's electromagnetic equations in vacuum, get the wave equations for the four fields vectors E, D, B and H.
Explain about the term electron microscope. Electron microscope: An electron microscope is a form of microscope which uses electrons to illuminate a specimen and make an enl
What are the kinds of energy?
It describes the behaviour of a collection of a particle N(E) with gives energy through N(E)α exp(-E/KT) where K is Boltzmann constant. It can be explained as a collection of
Nuclear Reactor: During fission large amount of energy is free in the form of heat. A system, which is used to get controlled amount of heat energy from nuclear fission is know
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Free Expansion process: In free expansion of gas, the gases enlarge in vacuum. Thus, work done Δw=0 In free expansion if state changes from 1 → 2 only the initial and final s
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