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What are semiconductors? Give an example for n-type semiconductors.
Semiconductors are materials having electrical conductivity among that of insulators and conductors. This is because, in semiconductors, there is only a small difference in energy among the ?lled valence band of electrons and the empty conduction band. They are the solids which act as insulator at absolute zero but conduct electricity at ordinary temperatures. For instance, N-type semiconductor is obtained by doping Phosphorous or Arsenic on Silicon or Germanium
Measuring with a Micrometer Caliper A simple animation of using a micrometer to measure the width of a pencil.
Relative velocity of a boat in a river flowing at a given velocity horizontally Ans) assume the river to be stopped and measure relative velocity of boat and find angle.
How to find acceleration from succesive speed?
Why it is in general considered easier to determine the electric potential at a given point in space or at a given set of points in space due to a continuous charge distribution th
An open barge has the dimensions 22x40x12m. If the bargeis made out of 4.0-cm-thick steel plate on each of its four sides and its bottom, what mass of coal can the barge carry in f
Photomultiplier tube(PTM) it can detect a weak flash of light and estimate the amount of light .The principle of operation (fig(4)) a light photon released electron at the phot
In optics what is intended by the expression "constructive interference." Answer: This is factual for any kind of waves. Any time you have coherent waves of the same kind
An ideal Brayton cycle uses air as a working fluid. The air enters the compressor at 101 kpa and 37 C. The pressure ratio of the compressor is 12:1, and the temperature of the air
One way to keep the contents of a garage from becoming too cold on a night when severe subfreezing temperature is forecast is to put a tub of watering the garage. Assume the mass o
why The magnitude of known potential difference must be greater than the value of unknown potential difference to be measured.
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