Test Details

Semiconductor Electronics: Materials, Devices and Simple Circuits

Feb 11, 9:00 PM

51 minutes

Feb 11, 9:51 PM

39.0 marks

MCQ

39 questions

19891998

mentor of Maths and science with diverse perspective

Class Details

Physics

Economics

12th Physics Concepts

Physics

Economics

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Question Text

Question 2 :
With rise in temperature, resistance of a semiconductor material (germanium or silicon)

Question 3 :
The level formed due to impurity atom, in the forbidden energy gap, very near to the valence band in a P-type semiconductor is called

Question 4 :
Which one of the following statements is not correct in case of a semiconductor?

Question 10 :
The magnitude of the force between a pair of conductors, each of length 110 cm, carrying a current of 10 A and separated by a distance of 10 cm is

Question 11 :
In a metal, the separation between conduction band and valence band is of the order

Question 13 :
Bands in solids are formed due to a group of closely spaced ________ .

Question 15 :
The distinction between conductors, insulators and semiconductors is largely concerned with

Question 16 :
Number of electrons in the valence shell of a semiconductor is

Question 18 :
Which one is the weakest type of bonding in solids ?

Question 20 :
The band gap in silicon and germanium ( in eV) respectively is

Question 21 :
The level formed due to impurity atom,in the forbidden energy gap,very near to the valence band in a p-type semiconductor is called

Question 23 :
Which of the following is an example of a direct band gap intrinsic semiconductor?

Question 29 :
A strip of copper and another of germanium are cooled from room temperature to $80\ K$. The resistance of

Question 30 :
Assertion: In some solids, the valence band is completely filled while the next higher band separated by an energy gap of few electrons-volts is completely empty. Reason: In insulators the energy band completely filled with electrons( the valence band) and above it is empty band (the conduction band)

Question 32 :
When the conductivity of a semiconductor is only due to breaking of covalent bonds, the semiconductor is called

Question 33 :
A semi conductor device with both active and passive electronic elements diffused into a silicon water to form a functional circuit is called.

Question 34 :
Which of the following has least band gap energy at $273K$.

Question 38 :
Among the following, the wrong statement in the case of semiconductor is:

Question 39 :
What is the resistivity of a pure semiconductor at absolute zero ?

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