NCERT Solutions for Class 12 Physics Chapter 14 Free PDF Download

NCERT Solutions for Class 12 Physics Chapter 14 – Semiconductor Electronics

Physics is a crucial part of Physics which aims to explain the behavior of objects. Moreover, it helps a lot to those students that want to be a physicist. In this NCERT Solutions for Class 12 Physics Chapter 14, we are discussing the Laws of Motion and the things related to it. Above all, the topics are explained in a detailed manner and in easy language.

Our team of proficient teachers has prepared these NCERT Solutions for Class 12 Physics Chapter 14. Also, you can learn the topics of the solutions at your convenience. Besides they will help to improve your grade.

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CBSE Class 12 Physics Chapter 14 Semiconductor Electronics NCERT Solutions

There is a whole new world of materials other than metals and non-metals, popularly known as the semiconductor materials. They define the new cutting-edge technologies used in today’s world electronic devices. Interesting huh? Let’s study about the types of semiconductors, p-n n junction diodes, logic gates and transistor applications in the topics below:

• Classification of Metals, Conductors, and Semiconductors
• Intrinsic Semiconductor
• Extrinsic Semiconductor
• p-n Junction
• Special Purpose p-n Junction Diode
• Semiconductor Diode
• Digital Electronics and Logic Gates
• Junction Transistor – Structure and Action
• Junction Transistor – Circuit Configurations and Characteristics
• Junction Transistor as a Device
• Junction Transistor as a Feedback Amplifier and Transistor Oscillator
• Application of Junction Diode as a Rectifier

Some Concepts & Definitions from CBSE Class 12 Physics Chapter 14 Semiconductor Electronics

Q.1. What are the different types of Semiconductors?

Broadly speaking, there are three types of semiconductors:

1. Elemental semiconductors: Semiconductors comprising of a single fourth group element. Examples: Si and Ge.
2. Compound semiconductors: Semiconductors made of compounds of two or more elements. These can be further classified into:

• Inorganic: CdS, GaAs, InP, etc
• Organic: anthracene, doped phthalocyanines, etc
• Organic polymers: polypyrrole, polyaniline, etc

Q.2. Define Valence Band and Conductor Band

The valence band is the energy band consisting of valence (tightly-bound) electrons. The conduction band is the energy band consisting of conduction (loosely-bound) electrons.

Note:
1. Without any external energy, all electrons lie in the valence band.

2. For metals, conduction band, and valence band overlap.

3. In Si, outer orbit comprises of 2s, + 2p electrons. These 4 electrons have 8 available energy states of which 4 are in the valence band and 4 in the conduction band.

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