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In isolated atom the valence electrons can exist only in one of the permitted orbital's every of a sharply explained energy known as energy levels. But when two molecules are brought close to every other, there are changes in energy levels and they spread in the form of bands.
The device which changes chemical energy into electrical energy is called as electric cell. Battery is a host of constant emf but not constant current.
In an experiment of Quink tube source freequence 100 Hz is used to find 2nd maxima to 4th manima movalbe part of tube displaced by 1cm then calculate speed of sound in air
A 400V, 3-phase star linked alternator supplies a delta-connected load, each phase of which has a resistance of 30 and inductive reactance 40. Calculate (a) the current sup
The average energy needed to release a nucleon from the nucleus is known as binding energy per nucleon. Binding energy per nucleon diffrence Stability of nucleus
Define the term multi-mode fibre shortly. Multi-mode fibre: This type of fibre permits more than one mode to travel by this. As this has to permit more number of modes to tr
Briefly explain Brewster's law? Show that at the polarizing angle of incidence the reflected and transmitted light becomes perpendicular to each other.
Maxwell's demon (J.C. Maxwell): A thought experiment demonstrating the concepts of entropy. We have a container of gas that is partitioned in two equal sides; each side is in
Discuss the diffraction of light through n slits using plane transmission grating.
POSITIVE ACCELERATION: If velocity of a body is enhancing, then its acceleration is said to be positive. The direction of positive acceleration is similar as that of velocity.
What are bare fibers? It used mostly with PMMA fibers and refers to the optics which have no external protection sheath.
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