18th Chapter

12th Class Physics Chapter 18 Test

Here you can prepare 12th Class Physics Chapter 18 Electronics Test. Click the button for 100% free full practice test.

Second Year Physics Chapter 18 Online MCQ Test for 2nd Year Physics Chapter 18 Electronics Preparation

This online test contains MCQs about following topics:.

- Rectification - Specially Designed p-n Junction - Transistors - Transistor as an Amplifier - Transistor as a Switch - Operational Amplifier - OP-AMP as Inverting Amplifier - OP-AMP as Non-Inverting Amplifier - OP-AMP as a Comparator - Comparator as a Night Switch - Digital Systems - Fundamental Logic Gates - Other Logic Gates - Applications of Gates in Control Systems

FSC Part 2 Physics Ch 18 Test
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Second Year Physics Chapter 18 Online MCQ Test for 2nd Year Physics Chapter 18 Electronics Preparation

Sr. # Questions Answers Choice
1 In an N-type silicon, which of the following statement is true?
  • A. Electrons are majority carriers & trivalent atoms are the dopants
  • B. Electrons are majority carriers & pentavalent atoms are the dopants
  • C. Holes are minority carriers & pentavalent atoms are the dopants.
  • D. Holes are minority carriers & trivavalent atoms are the dopants.
2 The ratio Beta in transistor is called.
  • A. Voltage gain
  • B. Emitter gain
  • C. Current gain
  • D. Nuclear gain
3 In case of reverse biasing, current is flown due to:
  • A. Minority charge carriers
  • B. Majority charge carriers
  • C. Electrons
  • D. Protons
4 For rectification we use.
  • A. Transformer
  • B. Diode
  • C. Choke
  • D. Generator
5 The P.D develop in case of germanium is:
  • A. 0.3
  • B. 0.7
  • C. 0.5
  • D. 0.9
6 Conversion of A.C into D.C is called:
  • A. Compton effect
  • B. Rectification
  • C. Amplification 
  • D. Pair production
7 For normal transistor the emitter current can be given by
  • A. I<sub>E</sub> = I<sub>C</sub>
  • B. I<sub>E</sub> = I<sub>C</sub> + I<sub>B</sub>
  • C. I<sub>E</sub> = I<sub>B</sub>
  • D. None of these
8 Which device is used as a rectifier?
  • A. Capacitor
  • B. Transistor
  • C. Diode
  • D. Transformer
9 Which diode works at reverse biasing.
  • A. LED
  • B. Photo voltaic cell
  • C. Photo diode
  • D. Silicon diode
10 Transistor was invented by:
  • A. Bardeen
  • B. Micheal faraday
  • C. Lenz
  • D. Newton

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