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NEET
Exam
NEET
Subject
Physics
Chapter
Semiconductors

NEET · Physics · Semiconductors

Match the List I with List II List I List II A Intrinsic...

Match the List I with List II

  List I   List II
A Intrinsic Semiconductor I Fermi-level near valence band
B n-type semiconductor II Fermi-level at middle of valence and conduction band
C p-type semiconductor III Fermi-level near conduction band
D Metals IV Fermi-level inside conduction band

Choose the correct answer from the options given below:

Options

  1. A(A) →\to I, (B) →\to II, (C) →\to III, (D) →\to IV
  2. B(A) →\to II, (B) →\to I, (C) →\to III, (D) →\to IV
  3. C(A) →\to II, (B) →\to III, (C) →\to I, (D) →\to IV
  4. D(A) →\to III, (B) →\to I, (C) →\to II, (D) →\to IV

Correct answer

C. (A) →\to II, (B) →\to III, (C) →\to I, (D) →\to IV

Step-by-step solution

(A) The Fermi-level in an intrinsic semiconductor is nearly midway between the conductive and valence band.So, (A)→II\left(A\right) \to II.

(B) In the case of n-type semiconductor, the Fermi level is present just below the conduction band. So, (B)→III\left(B\right) \to III.

(C) Fermi level in a p-type semiconductor lies close to the top of the valence band. So, (C)→I\left(C\right) \to I

(D) In metals and semimetals the Fermi level lies inside at least one band i.e., inside conduction band. So, (D)→IV\left(D\right) \to IV.

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