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In silicon at T = 300 K the thermal-equilibrium concentration of electron is n0 = 5 x 10^4 cc. The hole concentration is

Correct Answer: 4.5 x 1015 cc
ni x ni = no x po.

Pure Si at 300 K has equal electron (ni) and hole concentration (p) of 1.5 X 1016 m-3. Doping by indium increases p to 4.5 X 1022 m-3. What is n in the doped silicon?

Find the velocity of an electron when its kinetic energy is equal to one electron volt (in 105m/s). Given charge of an electron e = 1.6 x 10-19 and mass of an electron m = 9.1 x 10-31.

Silicon is doped with arsenic (concentration 1020 atoms.m-3). At room temperature, the electron and hole mobilities in Si are 0.14 m2.v-1.s-1 and 0.05 m2v-1.s-1 respectively. The conductivity in (?m)-1, at room temperature for Si doped with As is

The thermal-equilibrium concentration of hole p0 in silicon at T = 300 K is 1015 cm3. The value of n0 is

The hole concentration in extrinsic materials is _________ electron concentration.

For manufacturing of a certain amount of hole, maximum hole size was found to be 50.14 mm and minimum hole size was found to be 49.98. What will be the Tolerance in mm?

For manufacturing of a certain amount of hole, maximum hole size was found to be 50.14 mm and minimum hole size was found to be 49.98. Tolerance in mm will be

In a room-and-pillar stope, bench blasting is conducted using ANFO having density of 800 kg/m3. The specific gravity of rock is 2.5, hole diameter is 100 mm and spacing to burden ratio is 1.3. The charge length of each blast hole is 80% of the hole length. For a desired powder factor of 0.48 kg/tonne, the spacing and burden of the blast pattern in m respectively are

A plate with an elliptical hole in the centre, with semi-major axis (a) perpendicular to the direction of loading and semi-minor axis (b) along the direction of loading, is subjected to a pull P. The maximum stress induced at the edge of the hole is equal to (where $$\sigma $$ = Stress for a plate with no hole i.e. nominal stress)

S1: There were no finger prints anywhere.
P: First of all it was impossible even for a child to enter through the hole in the roof.
Q: When the investigators tried to reconstruct the crime, they came up against facts.
R: Moreover, when the detectives tried to push a silver vase, it was found to be double the sizeof the hole.
S: Again, the size of the hole was examined by the experts who said that nothing had been passed through it.
S6: These conclusions made the detectives think that it was a fake theft.

The Proper sequence should be: