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JEE Advanced Semiconductor Electronics — practice questions — page 3

Explore 95 free Semiconductor Electronics questions in JEE Advanced 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 61–90 of 95.

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 →Assertion and reasonRead the answer and worked solution →True or false: carriers in a semiconductorRead the answer and worked solution →The output of an AND gate is HIGH only when:Read the answer and worked solution →Tap every semiconductor the chapter namesRead the answer and worked solution →Order the reasoning: why a pure semiconductor conductsRead the answer and worked solution →Resistivity rangesRead the answer and worked solution →Flip and pair: term with meaningRead the answer and worked solution →Metal, semiconductor, or insulator?Read the answer and worked solution →True or false: intrinsic semiconductorsRead the answer and worked solution →Elemental or compound semiconductor?Read the answer and worked solution →Semiconductors in devicesRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Flip and pair: material with its classRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Device or material?Read the answer and worked solution →Three of these are wrong. Find the one that holds.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 →Order the classification of a materialRead the answer and worked solution →

Worked practice questions

The property of a diode that lets it convert alternating voltage is used in a circuit called a:

  1. Regulator
  2. Rectifier
  3. Resistor
  4. Reflector
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Correct answer: B. Rectifier

1. A diode conducts in one direction and not the other. 2. That one-way behaviour can turn alternating into direct. 3. This property is used to rectify alternating voltages and the circuit is called a rectifier. 4. So the answer is a rectifier. _Source: syllabus Physics Part II, Ch 14 'Semiconductor Electronics'_

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The energy gap of silicon is given as approximately:

  1. 0.7 electron volts
  2. 9.1 electron volts
  3. 1.1 electron volts
  4. 5.4 electron volts
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Correct answer: C. 1.1 electron volts

1. The three group-four elements have very different band gaps. 2. Diamond is the largest and germanium the smallest. 3. For C, Si and Ge the energy gaps are 5.4 eV, 1.1 eV and 0.7 eV respectively. 4. So silicon is about 1.1 eV. _Source: syllabus Physics Part II, Ch 14 'Semiconductor Electronics'_

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The energy gap of germanium is given as approximately:

  1. 5.4 electron volts
  2. 1.1 electron volts
  3. 9.1 electron volts
  4. 0.7 electron volts
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Correct answer: D. 0.7 electron volts

1. Germanium conducts more readily than silicon at room temperature. 2. That follows from having the smaller gap of the two. 3. For C, Si and Ge the energy gaps are 5.4 eV, 1.1 eV and 0.7 eV respectively. 4. So germanium is about 0.7 eV. _Source: syllabus Physics Part II, Ch 14 'Semiconductor Electronics'_

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