This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part Ii) Chapter 14 Semiconductor Electronics Materials – Quiz 12 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part Ii) Chapter 14 Semiconductor Electronics Materials Quiz 12 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The mobility of free electrons is greater than that of free holes because A) They are light. B) They carry negative charge. C) They carry negative charge. D) They require low energy to continue their motion. Show Answer Correct Answer: A) They are light. 2. Which of the following is a famous semiconductor device? A) Resistors. B) Cables. C) Transistors. D) Batteries. Show Answer Correct Answer: C) Transistors. 3. What are the advantages of using diodes in electronic circuits? A) Diodes are used for amplifying signals. B) Diodes increase current flow in circuits. C) Diodes provide rectification, protect against reverse polarity, enable signal modulation, and assist in voltage regulation. D) Diodes can replace resistors in all applications. Show Answer Correct Answer: C) Diodes provide rectification, protect against reverse polarity, enable signal modulation, and assist in voltage regulation. 4. What type of materials have an intermediate conductivity between insulators and conductors? A) Superconductors. B) Insulators. C) Metals. D) Semiconductors. Show Answer Correct Answer: D) Semiconductors. 5. Which of the following is an example of a conductor? A) Rubber. B) Copper (Cu). C) Silicon (Si). D) Glass. Show Answer Correct Answer: B) Copper (Cu). 6. What is the range of electron energies higher than the valence band where electrons are free to move and can contribute to the flow of charge? A) Valence band. B) Conduction band. C) Forbidden band gap. D) Resistivity. Show Answer Correct Answer: B) Conduction band. 7. Which of the following is an advantage of semiconductor devices? A) Compact size. B) High voltage operation. C) High power requirement. D) Fragility. Show Answer Correct Answer: A) Compact size. 8. The ..... is a three-terminal device primarily used to amplify signals and control current within a circuit. A) Transistor. B) Potentiometer. C) Diode. D) None of the above. Show Answer Correct Answer: A) Transistor. 9. Is the element added to the type N semiconductors. A) Antimony. B) Boron. C) Chlorine. D) Argon. Show Answer Correct Answer: A) Antimony. 10. The characteristics of p-type semiconductors include A) Majority carriers are electron. B) Has tendency to gain electron. C) Has tendency to donor electron. D) Easy to conduct electricity. Show Answer Correct Answer: B) Has tendency to gain electron. 11. How can you analyze a diode in a simple circuit? A) Measure voltage and current across the diode in a circuit. B) Connect the diode in reverse bias and measure capacitance. C) Observe the diode's physical appearance for damage. D) Check the resistance of the diode with a multimeter. Show Answer Correct Answer: A) Measure voltage and current across the diode in a circuit. 12. Process of losing Valence electrons in an atom is called A) Excitation. B) Amplification. C) Ionization. D) Attenuation. Show Answer Correct Answer: C) Ionization. 13. What is the function of a rectifier circuit? A) To store electrical energy. B) To filter out noise from a signal. C) The function of a rectifier circuit is to convert AC to DC. D) To amplify weak signals. Show Answer Correct Answer: C) The function of a rectifier circuit is to convert AC to DC. 14. Amount of energy that Valence electron must have in order to jump from Valence band to conduction band is called A) Energy gap. B) Energy band. C) Energy baud. D) Energy core. Show Answer Correct Answer: A) Energy gap. 15. In solids, ..... in outer most orbits of atoms determine its electrical properties A) Protons. B) Neutron. C) Electrons. D) Positron. Show Answer Correct Answer: C) Electrons. 16. Describe the role of diodes in signal modulation. A) Diodes are used to store signals for later transmission. B) Diodes shape and modulate signals by allowing current to flow in one direction, essential for AM and FM applications. C) Diodes amplify signals by increasing their voltage levels. D) Diodes convert analog signals into digital signals. Show Answer Correct Answer: B) Diodes shape and modulate signals by allowing current to flow in one direction, essential for AM and FM applications. 17. The flow of holes from the p-region uncovers ..... charged acceptor ions. A) Positively. B) Negatively. C) Voltage. D) Current. Show Answer Correct Answer: B) Negatively. 18. What is the conductivity range of insulators? A) Very low. B) Intermediate. C) Variable. D) High. Show Answer Correct Answer: A) Very low. 19. What type of semiconductor is Silicon (Si)? A) Polymeric. B) Organic. C) Compound. D) Elemental. Show Answer Correct Answer: D) Elemental. 20. The resistivity of a semiconductor lies between A) (a)10$^{-6 }$$\Omega$m to10$^{-8 }$$\Omega$m. B) N(b) 10$^{8 }$$\Omega$m to10$^{14 }$$\Omega$m. C) (c) 10$^{-2 }$$\Omega$m to10$^{4 }$$\Omega$m. D) (d) none of these. Show Answer Correct Answer: C) (c) 10$^{-2 }$$\Omega$m to10$^{4 }$$\Omega$m. 21. Explain how a diode allows current to flow in one direction only. A) A diode allows current to flow in both directions equally. B) A diode allows current to flow in one direction by permitting flow when forward biased and blocking flow when reverse biased. C) A diode can amplify current in any direction. D) A diode only works when there is no voltage applied. Show Answer Correct Answer: B) A diode allows current to flow in one direction by permitting flow when forward biased and blocking flow when reverse biased. 22. The phrase "holes in a semiconductor" A) Holes may serve as carrier of electriciy. B) Empty energy level in an otherwise filled valence band. C) Mechanism by which a hole contribute to conductivity. D) Results in allowable energy states which lie in the forbidden energy gap. Show Answer Correct Answer: B) Empty energy level in an otherwise filled valence band. 23. What are the advantages of using semiconductors in electronics? A) Low reliability in extreme conditions. B) High cost of production. C) Large physical size. D) Advantages of using semiconductors in electronics include low power consumption, small size, high efficiency, and integration of multiple functions. Show Answer Correct Answer: D) Advantages of using semiconductors in electronics include low power consumption, small size, high efficiency, and integration of multiple functions. 24. In PN junction forward biasing width of the depletion region A) Increases. B) Decreases. C) All the above. D) None of the above. Show Answer Correct Answer: B) Decreases. 25. What is the main difference between N-type and P-type semiconductors? A) N-type semiconductors have holes; P-type semiconductors have extra electrons. B) N-type semiconductors have extra electrons; P-type semiconductors have holes. C) N-type semiconductors are made of metals; P-type semiconductors are made of insulators. D) N-type semiconductors conduct only in reverse; P-type semiconductors conduct only in forward. Show Answer Correct Answer: B) N-type semiconductors have extra electrons; P-type semiconductors have holes. ← PreviousNext →Related QuizzesClass 12 Physics (Part Ii) Chapter 14 Semiconductor Electronics Materials Quiz 1Class 12 Physics (Part Ii) Chapter 14 Semiconductor Electronics Materials Quiz 2Class 12 Physics (Part Ii) Chapter 14 Semiconductor Electronics Materials Quiz 3Class 12 Physics (Part Ii) Chapter 14 Semiconductor Electronics Materials Quiz 4Class 12 Physics (Part Ii) Chapter 14 Semiconductor Electronics Materials Quiz 5Class 12 Physics (Part Ii) Chapter 14 Semiconductor Electronics Materials Quiz 6Class 12 Physics (Part Ii) Chapter 14 Semiconductor Electronics Materials Quiz 7Class 12 Physics (Part Ii) Chapter 14 Semiconductor Electronics Materials Quiz 8Class 12 Physics (Part Ii) Chapter 14 Semiconductor Electronics Materials Quiz 9Class 12 Physics (Part Ii) Chapter 14 Semiconductor Electronics Materials Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books