If you are preparing for CBSE Class 12 Board Exam Term 1 which will be an objective type questions paper, then you need to practice multiple choice questions of Class 12 Physics Chapterwise. In this article of AKVTutorials, you will get MCQ Questions for Class 12 Physics Chapter 14 Semi Conductor Electronics with Answer Keys.
MCQ Questions for Class 12 Physics Chapter 14 Question No 1:
In Conductor, Semiconductor & Insulator, the forbidden energy gap are E1, E2 and E3 respectively. Which one is correct?
Option A : E1 <E2 < E3
Option B : E1 > E2 < E3
Option C : E1 > E2 > E3
Option D : E1 = E2=E3
Show/Hide Answer
Option A : E1 <E2 < E3
MCQ Questions for Class 12 Physics Chapter 14 Question No 2:
Silicon is doped with which of the following to obtain P type semiconductor:
Option A : Phosphorus
Option B : Gallium
Option C : Germanium
Option D : Bismuth
Show/Hide Answer
Option B : Gallium
MCQ Questions for Class 12 Physics Chapter 14 Question No 3:
What happens to resistance of an intrinsic semiconductor when heated?
Option A : Increases
Option B : Remains constant
Option C : Decreases
Option D : Increases linearly
Show/Hide Answer
Option C : Decreases
MCQ Questions for Class 12 Physics Chapter 14 Question No 4:
A semiconductor has an electronic concentration of 6 X 1022 per m3 and hole concentration of 8.5 X 109 Per m3. Then it is
Option A : N type semiconductor has an electronic
Option B : P type semiconductor
Option C : Intrinsic semiconductor
Option D : Conductor
Show/Hide Answer
Option A : N type semiconductor
MCQ Questions for Class 12 Physics Chapter 14 Question No 5:
Zener diode is specially used in:
Option A : Reverse bias
Option B : Forward bias
Option C : Amplifiers
Option D : Rectifiers
Show/Hide Answer
Option A : Reverse bias
MCQ Questions for Class 12 Physics Chapter 14 Question No 6:
What type of doing is used in Zener diode?
Option A : Light
Option B : Moderate
Option C : Heavy
Option D : No doping
Show/Hide Answer
Option C : Heavy
MCQ Questions for Class 12 Physics Chapter 14 Question No 7:
In an n-type silicon, which of the following statement is true:
Option A : Electrons are majority carriers and trivalent atoms are dopants
Option B : Electrons are minority carriers and pentavalent atoms are dopants
Option C : Holes are minority and pentavalent atoms are dopants
Option D : Holes are majority carriers and trivalent atoms are dopants
Show/Hide Answer
Option C : Holes are minority and pentavalent atoms are dopants
MCQ Questions for Class 12 Physics Chapter 14 Question No 8:
When a forward bias is applied to a P-n junction, it:
Option A : Raises the potential barrier
Option B : Reduces the majority carrier current to zero
Option C : Lowers the potential barrier
Option D : Increases the depletion layer width
Show/Hide Answer
Option C : Lowers the potential barrier
MCQ Questions for Class 12 Physics Chapter 14 Question No 9:
A P-type semiconductor can be obtained by adding:
Option A : Arsenic to pure silicon
Option B : Gallium to pure silicon
Option C : Antimony to pure germanium
Option D : Phosphorous to pure germanium
Show/Hide Answer
Option B : Gallium to pure silicon
MCQ Questions for Class 12 Physics Chapter 14 Question No 10:
Electronic conductivity of a semiconductor:
Option A : Decreases with the rise in its temperature
Option B : Increases with the rise in its temperature
Option C : Does not change with the rise in its temperature
Option D : First increases and then become infinity
Show/Hide Answer
Option B : Increases with the rise in its temperature
