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NEET UG Semiconductor Electronics — practice questions — page 2

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 31–60 of 169.

The deliberate addition of a desirable impurity to a semiconductor is called:Read the answer and worked solution →The impurity atoms added to a semiconductor are called:Read the answer and worked solution →The energy band containing the energy levels of the valence electrons is called the:Read the answer and worked solution →The energy band lying above the valence band is called the:Read the answer and worked solution →Doping silicon or germanium with a pentavalent element produces which semiconductor?Read the answer and worked solution →Doping silicon or germanium with a trivalent impurity produces which semiconductor?Read the answer and worked solution →A pentavalent dopant donates one extra electron and is therefore known as a:Read the answer and worked solution →In a p-type semiconductor, which carriers are the majority carriers?Read the answer and worked solution →In an intrinsic semiconductor, how do the electron and hole concentrations compare?Read the answer and worked solution →For insulators, the energy gap is stated as being greater than:Read the answer and worked solution →For metals, the energy gap is described as being approximately:Read the answer and worked solution →The region on either side of a p-n junction emptied of free charges is called the:Read the answer and worked solution →The potential that prevents electrons moving from the n region into the p region is called the:Read the answer and worked solution →When a diode has its p-side connected to the positive battery terminal, it is said to be:Read the answer and worked solution →When the n-side of a diode is positive and the p-side negative, the diode is:Read the answer and worked solution →The property of a diode that lets it convert alternating voltage is used in a circuit called a:Read the answer and worked solution →The energy gap of silicon is given as approximately:Read the answer and worked solution →The energy gap of germanium is given as approximately:Read the answer and worked solution →n-type against p-typeRead the answer and worked solution →Sort by the band gapRead the answer and worked solution →Intrinsic and extrinsicRead the answer and worked solution →One word is wrongRead the answer and worked solution →Type the band gapsRead the answer and worked solution →The band holding the valence electrons is called the:Read the answer and worked solution →The band just above the valence band is the:Read the answer and worked solution →The energy separation between the two bands is called the:Read the answer and worked solution →Deliberate addition of an impurity to a semiconductor is called:Read the answer and worked solution →A doped semiconductor is described as:Read the answer and worked solution →In an intrinsic semiconductor, electrons and holes are:Read the answer and worked solution →Doping with a pentavalent atom gives which type?Read the answer and worked solution →

Worked practice questions

The deliberate addition of a desirable impurity to a semiconductor is called:

  1. Doping
  2. Damping
  3. Dumping
  4. Dipping
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Correct answer: A. Doping

1. An intrinsic semiconductor conducts very poorly at room temperature. 2. Adding a trace of another element changes that. 3. The deliberate addition of a desirable impurity is called doping. 4. The impurity atoms themselves are called dopants. _Source: syllabus Physics Part II, Ch 14 'Semiconductor Electronics'_

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The impurity atoms added to a semiconductor are called:

  1. Dippers
  2. Dopants
  3. Damper
  4. Dampers
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Correct answer: B. Dopants

1. Doping is the process and the added atoms need a name of their own. 2. They are named after the process. 3. The impurity atoms are called dopants. 4. So the answer is dopants. _Source: syllabus Physics Part II, Ch 14 'Semiconductor Electronics'_

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The energy band containing the energy levels of the valence electrons is called the:

  1. Valence band
  2. Valiant band
  3. Variance band
  4. Vagrant band
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Correct answer: A. Valence band

1. Electron energies in a crystal group into bands. 2. The outer electrons of the atoms occupy one of them. 3. The energy band which includes the energy levels of the valence electrons is called the valence band. 4. So the answer is the valence band. _Source: syllabus Physics Part II, Ch 14 'Semiconductor Electronics'_

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