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

by Anand Meena
April 22, 2019
in Book Solutions
Reading Time: 2min read
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NCERT Solutions for Class 12th Physics Chapter 14 – Semiconductor Electronics Materials Devices And Simple Circuits

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

Class 12th Physics Chapter 14 Semiconductor Electronics Materials Devices And Simple Circuits NCERT Solution is given below.

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 12th Physics
NCERT Solutions for Class 12th Physics

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Anand Meena

Full time entrepreneur, likes to indulge in writing reviews about the latest technologies apart from helping students in career and exam related topics.

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