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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.

2nd Year Physics Chapter 18 Online MCQ Test for 12th Class Physics Chapter 18 (Electronics)

This online test contains MCQs about following topics:

- Brief Review of p-n Junction and its Characteristics
- 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

Ics Part 2 Physics Chapter 18 Test
ic

2nd Year Physics Chapter 18 Online MCQ Test for 12th Class Physics Chapter 18 (Electronics)

Sr. # Questions Answers Choice
1 Light emitting diodes are made from semiconductors.
  • A. Silicon
  • B. Germanium
  • C. Carbon
  • D. Gallium arsenide
2 Rectification is the process of converting.
  • A. D.C. into A.C.
  • B. A.C. in to D.C.
  • C. Low signal to high
  • D. High signal to low
3 Which factor does not affect the conductivity of PN-Junction diode.
  • A. Doping
  • B. Temperature
  • C. Voltage
  • D. Pressure
4 A diode characteristics curve is a plot between
  • A. Current and resistance
  • B. Voltage and time
  • C. Voltage and current
  • D. Current and time
5 The potential difference across depletion region in case of Si is
  • A. 0.6 volt
  • B. 0.9 volt
  • C. 0.7 volt
  • D. 0.2 volt
6 The symbol of p-n-p transistor is
  • A.
  • B.
  • C.
  • D.
7 In case of reverse biasing, current is flown due to:
  • A. Minority charge carriers
  • B. Majority charge carriers
  • C. Electrons
  • D. Protons
8 The circuit of full wave rectification consist of
  • A. Three diodes
  • B. Four diodes
  • C. Two diodes
  • D. One diode
9 A photo diode can turn its current ON and OFF in
  • A. Micro seconds
  • B. Mega seconds
  • C. Nano seconds
  • D. Mili seconds
10 The average gap for Germanium at 0K is
  • A. 1.12 ev
  • B. 0.02 ev
  • C. 6.72 ev
  • D. 7.2 ev

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