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When does intrinsic semiconductor become an extrinsic semiconductor? Illustrate.
Semiconductor doping is the process which changes an intrinsic semiconductor to an extrinsic semiconductor. During doping, impurity atoms are introduced to an intrinsic semiconductor. Impurity atoms are atoms of a different element than atoms of the intrinsic semiconductor. Impurity atoms act as either acceptors or donors to the intrinsic semiconductor, changing electron and hole concentrations of the semiconductor.
primary and secondary cells
chemical & physical properties of p block elements
Question: (i) List the different members of the marine mammalian groups. (ii) Explain the term "stranding" and give some reasons why cetaceans strand? (iii) Cetacean
how was the magnitude of electric charge concluded?
Applications of amperometry
Calculate the ideal rM/rX ratio for cation-anion and anion-anion contacts of an octahedral arrangement of anions around a cation as show in one plane in the figure below.
Copper crystallizes into a FCC structure and the unit cell has length of edge 3.61 x10-8 cm. Calculate the density of copper if the molar mass of Cu is 63.5 g
Explain the following and give one example of each: a. Tranquillizers b. Mordant c. Hybrid rocket propellants
the value of plank''s constant
Aluminium metal is frequently used as a reducing agent for the extraction of metals such as Chromium, Manganese etc. Explain why? Ans) The free energy change for the formation o
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