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ISC Class 12 Semiconductor Electronics — practice questions — page 2

Explore 58 free Semiconductor Electronics questions in ISC Class 12 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 31–58 of 58.

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 →Conductivity of an intrinsic semiconductor depends on its:Read the answer and worked solution →A material with a band gap above three electron volts is an:Read the answer and worked solution →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

Elemental or compound semiconductor?

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Items
  1. Item
    Silicon
    Category
    Elemental
  2. Item
    Germanium
    Category
    Elemental
  3. Item
    Gallium arsenide
    Category
    Compound
  4. Item
    Cadmium sulphide
    Category
    Compound
Categories
  1. Item
    Elemental
  2. Item
    Compound
Si and Ge are elements GaAs and CdS are compounds. Source: syllabus Physics, Ch 14 Semiconductor Electronics.

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Semiconductors in devices

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Questions
  1. Question
    Semiconductors are the basic materials of
    Choices
    1. steel making
    2. glassware
    3. solid state electronic devices
    Correct choice
    solid state electronic devices
  2. Question
    Which of these is a semiconductor device?
    Choices
    1. diode
    2. lever
    3. pulley
    Correct choice
    diode
  3. Question
    The charge carriers in an intrinsic semiconductor are
    Choices
    1. protons only
    2. electrons and holes
    3. neutrons
    Correct choice
    electrons and holes
  4. Question
    Those carriers come from
    Choices
    1. chemical reaction
    2. magnetism
    3. thermal excitation
    Correct choice
    thermal excitation
They are the basic materials of solid state electronics. Source: syllabus Physics, Ch 14 Semiconductor Electronics.

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Two are true, one is not

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Questions
  1. False statement
    Semiconductors have the highest resistivity
    Statements
    1. Metals have low resistivity
    2. Insulators have very high resistivity
    3. Semiconductors have the highest resistivity
  2. False statement
    Gallium arsenide is elemental
    Statements
    1. Gallium arsenide is elemental
    2. Silicon is elemental
    3. Gallium arsenide is a compound
  3. False statement
    Intrinsic means doped
    Statements
    1. Intrinsic means pure
    2. Intrinsic means doped
    3. Carriers arise thermally
The false line misplaces a material or a range. Source: syllabus Physics, Ch 14 Semiconductor Electronics.

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