NCERT Solutions for Class 12 Physics Chapter 14 – Semiconductor Electronics Materials Devices And Simple Circuits

Get here NCERT Solutions for Class 12 Physics Chapter 14. These NCERT Solutions for Class 12 of Physics subject includes detailed answers of all the questions in Chapter 14 – Semiconductor Electronics Materials Devices And Simple Circuits provided in NCERT Book which is prescribed for class 12 in schools.

Book: National Council of Educational Research and Training (NCERT)
Class: 12th Class
Subject: Physics
Chapter: Chapter 14 – Semiconductor Electronics Materials Devices And Simple Circuits

NCERT Solutions for Class 12 Physics Chapter 14 – Semiconductor Electronics Materials Devices And Simple Circuits

Question 14.1:
In an n-type silicon, which of the following statement is true:
(a) Electrons are majority carriers and trivalent atoms are the dopants.
(b) Electrons are minority carriers and pentavalent atoms are the dopants.
(c) Holes are minority carriers and pentavalent atoms are the dopants.
(d) Holes are majority carriers and trivalent atoms are the dopants.
Answer
The correct statement is (c).
In an n-type silicon, the electrons are the majority carriers, while the holes are the minority carriers. An n-type semiconductor is obtained when pentavalent atoms, such as phosphorus, are doped in silicon atoms.

Question 14.2:
Which of the statements given in Exercise 14.1 is true for p-type semiconductors.
Answer
The correct statement is (d).
In a p-type semiconductor, the holes are the majority carriers, while the electrons are the minority carriers. A p-type semiconductor is obtained when trivalent atoms, such as aluminium, are doped in silicon atoms.

NCERT Solutions for Class 12 Physics All Chapters

• Chapter 1 – Electric Charges And Fields
• Chapter 2 – Electrostatic Potential And Capacitance
• Chapter 3 – Current Electricity
• Chapter 4 – Moving Charges And Magnetism
• Chapter 5 – Magnetism And Matter
• Chapter 6 – Electromagnetic Induction
• Chapter 7 – Alternating Current
• Chapter 8 – Electromagnetic Waves
• Chapter 9 – Ray Optics And Optical Instruments
• Chapter 10 – Wave Optics
• Chapter 11 – Dual Nature Of Radiation And Matter
• Chapter 12 – Atoms
• Chapter 13 – Nuclei
• Chapter 14 – Semiconductor Electronics Materials Devices And Simple Circuits
• Chapter 15 – Communication Systems

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NCERT Solutions for Class 12 All Subjects

Class 12th Physics Solutions