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JEE Main Semiconductor Electronics — practice questions — page 2

Explore 125 free Semiconductor Electronics questions in JEE Main 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 125.

Spot the one that does not belongRead the answer and worked solution →Order the reasoning: why a pure semiconductor conductsRead the answer and worked solution →True or false: classifying materialsRead the answer and worked solution →Resistivity rangesRead the answer and worked solution →True or false: carriers in a semiconductorRead the answer and worked solution →Device or material?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 →Flip and pair: term with meaningRead the answer and worked solution →Two true, one falseRead the answer and worked solution →Spot the odd one outRead the answer and worked solution →Complete the resistivity comparisonRead 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 →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 →

Worked practice questions

Spot the one that does not belong

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Questions
  1. Items
    1. Silicon
    2. Copper
    3. Germanium
    Odd item
    Copper
  2. Items
    1. Diode
    2. Transistor
    3. Lever
    Odd item
    Lever
  3. Items
    1. Protons
    2. Electrons
    3. Holes
    Odd item
    Protons
One material is in a different class. Source: syllabus Physics, Ch 14 Semiconductor Electronics.

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Order the reasoning: why a pure semiconductor conducts

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Steps
  1. Start with a pure semiconductor crystal
  2. Thermal energy excites some electrons out of their bonds
  3. Each freed electron leaves a hole behind
  4. Both the electron and the hole can move
  5. So the pure material conducts, and is called intrinsic
Heat supplies the carriers. Source: syllabus Physics, Ch 14 Semiconductor Electronics.

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True or false: classifying materials

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Questions
  1. Statement is true
    Yes
    Statement
    Lattice structure helps decide a material's class.
  2. Statement is true
    Yes
    Statement
    Atomic structure of the constituent elements matters too.
  3. Statement is true
    Yes
    Statement
    Semiconductors sit between metals and insulators in resistivity.
  4. Statement is true
    No
    Statement
    All semiconductors are elemental.
  5. Statement is true
    Yes
    Statement
    Diodes and transistors are built from semiconductors.
Structure and resistivity together. Source: syllabus Physics, Ch 14 Semiconductor Electronics.

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