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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.
Henry; H (after W. Henry, 1775-1836): The derived SI unit of inductance, described as the inductance of a closed circuit wherein an electromotive force of 1 V is generated whe
Two forces-55-N clockwise and 35-N counters clockwise-are applied to a merry- go-round with a diameter of 4.5 m. What is the net torque?
What is a neutron? A neutron is a subatomic particle. Neutron is one of the building blocks of the atom. It has a mass of about 1.675 x 10-27 kg. Its spin is + 1/2 and that
how are "white dwarfs" explained in Fermi dirac statistics?
a) Spin motion of electrons b) On the basis of spin and orbital motion of electrons c) These are feebly attracted in an external magnetic field i.e., have a tendency to go fr
Define in detail about the test and characteristics of good bricks. Tests for bricks 1. Absorption a brick is taken and it is weighed dry. It is then immersed in water for
The opposition offered to the circular motion of bodies like sphere, disc, ring, cylinder etc. on another surface is known as rolling friction.
Figure shows the magnetic circuit of a relay. When each of the air gaps are 1.5mm wide find the mmf required to produce a flux density of 0.75 T in the air gaps. Use the B-
How is lasers use in Medical Treatment? Lasers in Medical Treatment: Lasers used within cosmetic surgery as removing tattoos, stretch marks, scars, sunspots, birthmarks, wri
#questi1. A sound with a frequency of 261.6 Hz travels through water at a speed of 1435 m/s. What is the wavelength of the wave? a. 1.83 x 10 -1 m b. 3.753 x 10 5 m c. 5.486 m
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