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ENERGY LEVELS
The energy levels, measured in electron volts (e.v.) in which orbiting electrons exist comply with a law of physics which states that energy can be given to electrons only in discrete amounts (quanta) which means that there are energy values that an electron cannot acquire. From this it can be deducted that there is a forbidden energy gap between each of the allowed energy bands K to O.
The width of the forbidden energy gap between the top of the valence band and the bottom of the conduction band determine the electrical conducting properties of materials.
Molecules of a medium after absorbing incoming light radiations, sends them in all direction. This process is called as Scattering.
experiment measuring moment of magnet
The weightless truss shown below supports loads at point A & B and is fastened to the supports at C & E. The value of F1 in kN is given in P13 and the value of F2 in kN is given i
contruction
Explain the term 'dielectric constant' of a medium in terms of capacitance of a capacitor. Draw a graph showing variation of resistivity of carbon with temperature
Which has additional rotational kinetic energy an object with a rotational inertia of 4 kg·m 2 and an angular velocity of 8 rad/s or else an object with a rotational inertia of 8
Longitudinal Waves: The traveling waves in which particles of the elastic medium vibrate about back and forth along the direction of propagation of waves are called longitudina
On the basis of mutual interactions or behavior of several materials in an external magnetic field, the materials are dividing in three basic categories. (i) Diamagnetic materi
Write two characteristic features of nuclear force which differentiate it from the Coulomb force.
Q What is electromagnetic induction? The phenomenon of producing an induced emf because of the changes in the magnetic flux associated with a closed circuit is known as electr
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