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NEET UG Semiconductor Electronics — practice questions — page 6

Explore 169 free Semiconductor Electronics questions in NEET UG Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Semiconductor Electronics questions and exercises with answers

Showing questions 151–169 of 169.

A material behaves as a metal when the two bands:Read the answer and worked solution →In an n-type semiconductor, the minority carriers are:Read the answer and worked solution →Tap every factor deciding a material's classRead the answer and worked solution →Assertion and reason: semiconductorsRead the answer and worked solution →Two true, one falseRead the answer and worked solution →True or false: devicesRead the answer and worked solution →Pure and impureRead the answer and worked solution →At absolute zero ($T = 0\,\text{K}$), a pure intrinsic semiconductor behaves like a(n)Read the answer and worked solution →Order the classification of a materialRead the answer and worked solution →Spot the odd one outRead the answer and worked solution →Complete the resistivity comparisonRead the answer and worked solution →Complete what decides the class of a materialRead the answer and worked solution →True or false: classifying materialsRead the answer and worked solution →Spot the odd one outRead the answer and worked solution →In a p-type semiconductor, the majority carriers are:Read the answer and worked solution →A p-n junction diode is forward biased when:Read the answer and worked solution →The band holding the valence electrons is called the:Read the answer and worked solution →Complete the doping ruleRead the answer and worked solution →Semiconductor bingoRead the answer and worked solution →

Worked practice questions

A material behaves as a metal when the two bands:

  1. Overlap
  2. Vanish
  3. Widen
  4. Invert
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Correct answer: A. Overlap

1. No energy is needed to reach the upper band if it starts lower. 2. Electrons then move freely without crossing any gap. 3. That happens when the bands overlap. 4. So the answer is overlap. _Source: syllabus Physics, Ch 14 'Semiconductor Electronics'_

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In an n-type semiconductor, the minority carriers are:

  1. Bond
  2. Holes
  3. Atoms
  4. Ions
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Correct answer: B. Holes

1. Donors flood the crystal with electrons. 2. Only a few thermally generated vacancies remain. 3. So holes are the minority carriers there. 4. The answer is holes. _Source: syllabus Physics, Ch 14 'Semiconductor Electronics'_

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Tap every factor deciding a material's class

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Questions
  1. Items
    1. Text
      Lattice structure
      Matches the category
      Yes
    2. Text
      Atomic structure of its elements
      Matches the category
      Yes
    3. Text
      Its resistivity band
      Matches the category
      Yes
    4. Text
      Its colour
      Matches the category
      No
    5. Text
      Its price
      Matches the category
      No
    Category
    Decides whether a material is metal, semiconductor or insulator
Structure at two levels. Source: syllabus Physics, Ch 14 Semiconductor Electronics.

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