This set of Class 12 Physics Chapter 14 Multiple Choice Questions & Answers (MCQs) focuses on “Digital Electronics and Logic Gates”. 1. Which of the following is correct about logic gates? a) Logic gates have one or more input signals and only one output signal b) Logic gates have only one input and output signal … Read more
This set of Class 12 Physics Chapter 14 Multiple Choice Questions & Answers (MCQs) focuses on “Semiconductor Electronics – Junction Transistor”. 1. How many types of transistors are there? a) 2 b) 5 c) 1 d) 7 2. Which of the following supplies charge carriers in a transistor? a) Collector b) Base c) Emitter d) … Read more
This set of Class 12 Physics Chapter 14 Multiple Choice Questions & Answers (MCQs) focuses on “Semiconductor Electronics – Special Purpose p-n Junction Diodes”. 1. Which of the following is operated in forward bias? a) LED b) Zener diode c) Photodiode d) Solar cell 2. Which of the following converts light energy to electric current? … Read more
This set of Class 12 Physics Chapter 14 Multiple Choice Questions & Answers (MCQs) focuses on “Semiconductor Electronics – Application of Junction Diode as a Rectifier”. 1. What is a rectifier used for? a) Convert ac voltage to dc voltage b) Convert dc voltage to ac voltage c) Measure resistance d) Measure current 2. How … Read more
This set of Class 12 Physics Chapter 14 Multiple Choice Questions & Answers (MCQs) focuses on “Semiconductor Diode”. 1. Why is there a sudden increase in current in Zener diode? a) Due to the rupture of ionic bonds b) Due to rupture of covalent bonds c) Due to viscosity d) Due to potential difference 2. … Read more
This set of Class 12 Physics Chapter 14 Multiple Choice Questions & Answers (MCQs) focuses on “Semiconductor Electronics – p-n Junction”. 1. What will happen when a p-n diode is reversed-biased? a) No current flows b) The depletion region is increased c) The depletion region is reduced d) The height of the potential barrier is … Read more
This set of Class 12 Physics Chapter 14 Multiple Choice Questions & Answers (MCQs) focuses on “Extrinsic Semiconductor”. 1. On doping germanium metal, with a little amount of indium, what does one get? a) Intrinsic semiconductor b) Insulator c) n-type semiconductor d) p-type semiconductor 2. In a pure semiconductor crystal, if current flows due to … Read more
This set of Class 12 Physics Chapter 14 Multiple Choice Questions & Answers (MCQs) focuses on “Intrinsic Semiconductor”. 1. An intrinsic semiconductor, at the absolute zero temperature, behaves like which one of the following? a) Insulator b) Superconductor c) n-type semiconductor d) p-type semiconductor 2. The probability of electrons to be found in the conduction … Read more
This set of Class 12 Physics Chapter 14 Multiple Choice Questions & Answers (MCQs) focuses on “Semiconductor Electronics : Materials, Devices and Simple Circuits”. These MCQs are created based on the latest CBSE syllabus and the NCERT curriculum, offering valuable assistance for exam preparation. 1. The manifestation of the band structure in solids is due … Read more
This set of Class 12 Physics Chapter 13 Multiple Choice Questions & Answers (MCQs) focuses on “Nuclear Energy”. 1. Which of the following is an essential requirement for initiating the fusion reaction? a) Critical mass b) Thermal neutrons c) High temperature d) Critical temperature 2. What is the reaction responsible for the production of light … Read more
