Back to SEMI CONDUCTOR DEVICES
JEE PHYSICS MCQ: SEMI CONDUCTOR DEVICES
1
Medium
1 of 1
Understanding
+4 | -1
A doped semiconductor has impurity levels below the conduction band.
(a) Is the material n-type or p-type?
(b) In a thermal collision, an amount of energy is given to the extra electron loosely bound to the impurity ion and this electron is just able to jump into the conduction band. Calculate the temperature .
(a) Is the material n-type or p-type?
(b) In a thermal collision, an amount of energy is given to the extra electron loosely bound to the impurity ion and this electron is just able to jump into the conduction band. Calculate the temperature .
View answer and explanation
Correct option: A
n-type;
Option A (n-type; ) is correct because the impurity levels are below the conduction band, indicating an n-type semiconductor, and the temperature is calculated using .
More Questions from SEMI CONDUCTOR DEVICES
Practice All Chapter MCQs →
A PN-junction has a thickness of the order of
In a transistor the base is the -region. Its width relative to the -region is
A solid reflects incident light and its electrical conductivity decreases with temperature. The binding in this solid is
An alternating current can be converted into direct current by a
A N–P–N transistor is used in inverse active mode of operation then its emitter base junction should be in
In the case of constants of a transistor