Class 12 Physics Chapter 14 Semiconductor Electronics MCQ In English
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Class 12 Physics Chapter 14 Semiconductor Electronics MCQ
1. The impurity doped in germanium to obtain n-type germanium is
- (A) Tetravalent
- (B) Trivalent
- (C) Pentavalent
- (D) None
Show Answer
(C) Pentavalent
2. In full wave rectification, if input frequency is 50 Hz, then output frequency will be
- (A) 50 Hz
- (B) 25 Hz
- (C) 100 Hz
- (D) 500 Hz
Show Answer
(B) 25 Hz
3. Main gate (Basic gate) is
- (A) AND, OR
- (B) NAND, NOR
- (C) OR, NOT
- (D) AND, OR, NOT
Show Answer
(D) AND, OR, NOT
4. Boolean algebra is essentially based on
- (A) truth
- (B) number
- (C) symbol
- (D) logic
Show Answer
(D) logic
5. Region without free electrons and holes in a p-n junction is
- (A) n-region
- (B) p-region
- (C) depletion region
- (D) none of these
Show Answer
(C) depletion region
6. To make a P-type semiconductor Germanium is doped with
- (A) Gallium
- (B) Boron
- (C) Aluminium
- (D) Phosphorus
Show Answer
(A) Gallium
7. For Binary number 10101, the number in decimal representation will be
- (A) 31
- (B) 21
- (C) 11
- (D) 03
Show Answer
(B) 21
8. In good conducrors of electricity the type of bonding that exist is
- (A) Van der Walls
- (B) covalent
- (C) ionic
- (D) metallic
Show Answer
(D) metallic
9. Who designed the transistor ?
- (A) Flemming
- (B) Shockley
- (C) Bravis
- (D) Edison
Show Answer
(B) Shockley
10. The majority current-carrier in p-type semiconductor is
- (A) electron
- (B) hole
- (C) photon
- (D) proton
Show Answer
(B) hole
11. Diode is used as
- (A) An amplifier
- (B) A modulator
- (C) An oscillator
- (D) A rectifier
Show Answer
(D) A rectifier
12. The decimal number 27 can be written in binary number as
- (A) 110011
- (B) 10111
- (C) 11001
- (D) 10011
Show Answer
(A) 110011
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Class 12 Physics Chapter 14 Semiconductor Electronics MCQ In English
| Pattern Based | Bihar Board, Patna |
| Class | 12th |
| Stream | Science (I.Sc) |
| Subject | Physics |
| Type Of Question | Objective Question || 01 Marks |
| Script | Hindi And English Medium |
| Published On | Bihari Academy |
FAQ. Semiconductor Electronics MCQ In English On Bihariacademy
Q1. What is a semiconductor class 12 physics?
Ans:- Semiconductors are the materials which have a conductivity between conductors (generally metals) and non-conductors or insulators (such as ceramics). Semiconductors can be compounds such as gallium arsenide or pure elements, such as germanium or silicon.
Q2. What is p-type and n type semiconductor 12?
Ans:- The majority carriers in a p-type semiconductor are holes. In an n-type semiconductor, pentavalent impurity from the V group is added to the pure semiconductor. Examples of pentavalent impurities are Arsenic, Antimony, Bismuth etc. The pentavalent impurities provide extra electrons and are termed as donor atoms