This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part Ii) Chapter 14 Semiconductor Electronics Materials – Quiz 11 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part Ii) Chapter 14 Semiconductor Electronics Materials Quiz 11 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the role of semiconductors in modern computing? A) Semiconductors have no impact on data processing or storage. B) Semiconductors are primarily used for creating mechanical parts in computers. C) Semiconductors are only relevant in telecommunications, not computing. D) Semiconductors are crucial for building electronic components that enable data processing and storage in modern computing. Show Answer Correct Answer: D) Semiconductors are crucial for building electronic components that enable data processing and storage in modern computing. 2. In DOS, volume of the sphere of radius n is equal to the A) Volume of cube. B) Number of energy states. C) Number of energy levels. D) None in the list. Show Answer Correct Answer: B) Number of energy states. 3. Define intrinsic semiconductors. A) Intrinsic semiconductors are always n-type materials. B) Intrinsic semiconductors are pure semiconductor materials that have no impurities. C) Intrinsic semiconductors contain various impurities. D) Intrinsic semiconductors are made from metal alloys. Show Answer Correct Answer: B) Intrinsic semiconductors are pure semiconductor materials that have no impurities. 4. What is a key concept in semiconductor physics that explains the behavior of semiconducting materials? A) Theory of Relativity. B) Newton's Laws. C) Band Theory of Solids. D) Quantum Mechanics. Show Answer Correct Answer: C) Band Theory of Solids. 5. A single-crystal semiconductor material with no other types of atoms within the crystal is known as ..... A) Intrinsic semiconductor. B) Extrinsic semiconductor. C) P-type semiconductor. D) N-type semiconductor. Show Answer Correct Answer: A) Intrinsic semiconductor. 6. What are the different types of semiconductor devices? A) Insulators, conductors, and superconductors. B) Vacuum tubes, relays, and potentiometers. C) Resistors, capacitors, and inductors. D) Diodes, transistors, and integrated circuits. Show Answer Correct Answer: D) Diodes, transistors, and integrated circuits. 7. What property of semiconductors changes with temperature? A) They become perfect insulators. B) They conduct electricity better. C) They change color. D) They become heavier. Show Answer Correct Answer: B) They conduct electricity better. 8. What is the behavior of semiconductors with temperature changes? A) No effect. B) Increased conductivity. C) Decreased conductivity. D) Constant conductivity. Show Answer Correct Answer: B) Increased conductivity. 9. ..... have the function of amplifying and switching electrical signals. A) Transistors. B) Resistors. C) Capacitors. D) Inductors. Show Answer Correct Answer: A) Transistors. 10. What is the most common semiconductor material used for producing integrated circuits A) Quartz. B) Silicon. C) Diamond. D) Tantalum. Show Answer Correct Answer: B) Silicon. 11. Valence electrons of Phosperous is ..... A) 3. B) 5. C) 4. D) None of the above. Show Answer Correct Answer: B) 5. 12. What is a photodetector and how does it function? A) A photodetector is a device that amplifies sound waves. B) A photodetector is a device that detects light and converts it into an electrical signal. C) A photodetector is a type of lens that focuses light. D) A photodetector is used to store electrical energy. Show Answer Correct Answer: B) A photodetector is a device that detects light and converts it into an electrical signal. 13. The p-n junction which generates an emf when solar radiation falls on it, with no external bias applied, is a A) Light Emitting diode. B) Photodiode. C) Solar cell. D) Zener Diode. Show Answer Correct Answer: C) Solar cell. 14. The small amount of current that flows in reversed biased diode before breakdown is called? A) Reverse Saturation Current. B) Leakage Current. C) Forward Current. D) None of the above. Show Answer Correct Answer: B) Leakage Current. 15. What is created in the material during p-type doping to act as positive charge carriers? A) Protons. B) Holes. C) Neutrons. D) Electrons. Show Answer Correct Answer: B) Holes. 16. Impure semiconductor is ..... A) Intrinsic. B) Extrinsic. C) Nutral. D) None of the above. Show Answer Correct Answer: B) Extrinsic. 17. Wavelength produced by smeiconductor laser is A) 5000 Angstrom. B) 6000 Angstrom. C) 8400 to 8600 Angstrom. D) None. Show Answer Correct Answer: C) 8400 to 8600 Angstrom. 18. Why are diodes important in preventing current flow in the reverse direction? A) To increase resistance in the forward direction. B) To amplify the current flow in the reverse direction. C) To provide a one-way path for current flow. D) To generate heat when current flows in the reverse direction. Show Answer Correct Answer: C) To provide a one-way path for current flow. 19. Basic building blocks of all electronic circuits are A) Devices in which there is a flow of electrons. B) Devices in which there is no flow of electrons. C) Devices in which there is a controlled flow of electrons. D) Devices in which there is an uncontrolled flow of electrons. Show Answer Correct Answer: C) Devices in which there is a controlled flow of electrons. 20. The ..... is simply a variable-capacitance diode. A) Capacadode. B) LED. C) Varactor. D) None of the above. Show Answer Correct Answer: C) Varactor. 21. Explain the function of a transistor. A) A transistor acts as a switch or amplifier for electrical signals. B) A transistor is used to store electrical energy. C) A transistor converts electrical energy into mechanical energy. D) A transistor regulates the flow of water in plumbing systems. Show Answer Correct Answer: A) A transistor acts as a switch or amplifier for electrical signals. 22. What is a photovoltaic cell? A) A device that converts light energy directly into electrical energy using semiconductors. B) A type of battery that stores electrical energy for later use. C) A solar panel that only collects heat energy. D) A device that converts electrical energy into mechanical energy. Show Answer Correct Answer: A) A device that converts light energy directly into electrical energy using semiconductors. 23. Emits light when a current passes through it A) Fuse. B) Diode. C) LED. D) Resistor. Show Answer Correct Answer: C) LED. 24. Semiconductor is defined as A) Substance for the width of the forbiden energy region is 1eV. B) Germanium and silicon are having band gap of 0.785 and 1.21eV respectively. C) These are known as intrinsic semiconductor. D) The forbiden band seprates the filled valence region electronfrom the vacant band. Show Answer Correct Answer: A) Substance for the width of the forbiden energy region is 1eV. 25. In Operational Amplifier-Adder Application-the output voltage will be equal to A) Sum of all input voltages. B) Subtraction from one to input voltage to another. C) All the above. D) None of the above. Show Answer Correct Answer: A) Sum of all input voltages. ← 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