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

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

3. Main gate (Basic gate) is

• (A) AND, OR
• (B) NAND, NOR
• (C) OR, NOT
• (D) AND, OR, NOT

4. Boolean algebra is essentially based on

• (A) truth
• (B) number
• (C) symbol
• (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

6. To make a P-type semiconductor Germanium is doped with

• (A) Gallium
• (B) Boron
• (C) Aluminium
• (D) Phosphorus

7. For Binary number 10101, the number in decimal representation will be

• (A) 31
• (B) 21
• (C) 11
• (D) 03

8. In good conducrors of electricity the type of bonding that exist is

• (A) Van der Walls
• (B) covalent
• (C) ionic
• (D) metallic

9. Who designed the transistor ?

• (A) Flemming
• (B) Shockley
• (C) Bravis
• (D) Edison

10. The majority current-carrier in p-type semiconductor is

• (A) electron
• (B) hole
• (C) photon
• (D) proton

11. Diode is used as

• (A) An amplifier
• (B) A modulator
• (C) An oscillator
• (D) A rectifier

12. The decimal number 27 can be written in binary number as

• (A) 110011
• (B) 10111
• (C) 11001
• (D) 10011

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Class 12 Physics Chapter 14 Semiconductor Electronics MCQ In English

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