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Can you explain thermistor? Write short notes on back emf and internal resistance of a cell.
Do fiber optic transmits the radiation? Light is a radiation; hence, the answer is yes. Several fibers, depending upon the nature of the materials from that they are made, tran
What are the advantages of fibers optics? Glass fiber optics are extremely resilient and ideally fine for working in places where the actual conductor will tend to extreme temp
What are semiconductors? Give an example for n-type semiconductors. Semiconductors are materials having electrical conductivity among that of insulators and conductors. This i
example problms of vectors?
What can justify the use of fiber optic? In the huge majority of tasks, using traditional implies, the amount of light used is far in excess to the quantity really required. Mo
What do you understand by half period zones? What is their other name? Distinguish between physical and geometric (wave) approximations of light.
Q. Define: the temperature coefficient of resistance. The ratio of raise in resistance per degree rise in temperature to its resistance at 0 o C is called as temperature coeff
A wave front is a line or surface on which the disturbance has the similar phase at every position. If the source is periodic, it generates a succession of ray front, each of the s
.how can we prove that sn=u+a(1/2)
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