Electronics Mcqs
Our collections of Multiple choice questions and answers focuses on study of Electronics in Physics. These questions are chosen from a collection of most authoritative and best reference books on Physics. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, MDCAT, Teaching jobs Tests and Chemical industry job interviews. One should practice our Mcqs to assimilate knowledge on Electronics in Physics comprehensively.
32. The value of resistivity for insulator is of the order of
105 ohm metre
106 ohm metre
107 ohm metre
108 ohm metre
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33. The velocity of an oscillating charge as it moves to and fro along a wire is always
Constant
Zero
Changing
Infinite
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34. The working of transistor as amplifier is similar to
Step up transformer
Step down transformer
Three diodes in common
Triode vacuum tube
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35. Thermions are
Protons
Positrons
Electrons
Photons
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36. To obtain a p-type semi-conductor Si Crystal must be doped with foreign atoms whose valency is
2
3
4
5
37. To obtain an n-type semiconductor germanium crystal it must be doped with foreign atoms whose valency is
2
3
4
5
38. Which one of following band is completely filled in case of conductors?
Conduction band
Fermi band
Valence band
Forbidden band
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39. Which one of the following has the greatest energy gap?
Insulator
Conductor
Semi conductor
Any of above
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40. Which one of the following is not a donor impurity?
Antimony
Phosphorus
Aluminium
Arsenic
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