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Q. What is an intrinsic semiconductor? Give any two examples. A) A semiconductor which is pure as well as contains no impurity is known as an intrinsic semiconductor. B) In
Neutron is a fundamental particle which is necessary constituent of all nuclei except that of hydrogen molecule. It was discovered by Chadwick. (1) The charge of neutron: It is
At what temperature would the average speed of helium atoms equal (a)the escape speed from Earth, 1.12 ´ 10 4 m/s, and (b) the escape speed from the Moon, 2.37´ 10 3 m/s? (See Ch
For the circuits shown in Figure the resistors show the internal resistance of the batteries. Find, in each case: (i) The total e.m.f. across PQ (ii) The total equivalent in
Q. Orbital Velocity for Low Earth Orbit Neglecting air friction an object will sustain a low altitude orbit when the centrifugal force due to its motion in a circular orbit is
Shell type transformers: In this type of transformer the iron core surrounds the copper windings (fig. given below). The core is in the form of numeral 8. The entire flux pas
A) Explain the flow of direct current? ( describe direct current) b) Explain the effect of resistance in circuits? (Describe effect of resistance)
Define the characteristics of Heterojunction laser. Heterojunction laser: The threshold current density for homojunction lasers is extremely large because of poor optical an
In order to determine performance of program normal form of analysis of program is to just calculate total amount of CPU time needed to execute different part of program it implies
What is the wavelength of electromagnetic waves of frequency 5 x 1019Hz in free space? Give its two applications.
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