Once you have completed the questions, click on the 'Submit Answers for Grading' button at the bottom of this page to get your results. (D) PIN current, 8. Answer. Photodiode is used in the detection of. Light Emitting Diode or LED objective questions and answers. MCQ on Fiber Optic Devices & Instrumentation. Compared to a photo-diode, which of the listed advantages and disadvantages would be expected of a phototransistor … MCQ in Special Purpose Diodes from the book Electronic Principles by Albert Malvino. (d) Both visible and invisible light. (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. (D) 1240 nm, 4. Photodiode is used in the detection of (B) Invisible light NEET Physics Photodiode Multiple Choice Questions, 1. Answer: (d) When photons are incident on the diode, the fractional change in the reverse current is much greater than the fractional change in the forward current. The area of the two parallel plates. MCQ: In photodiode, when there is no incident light, thereverse current is almost negligible and is called. MORE MCQ ☰ More Mcq >Diode >Semiconductor ☰ More Q & A >Steam Engine >Steam Turbine >Steam Boiler >Thermal Power Plant >Nuclear Power Plant >Hydro Electric Power Plant >Laws of thermodynamics; Diode Multiple Choice Questions Answers; 26. (C) Photocurrent Name the device and write where it is used. A pinoybix mcq, quiz and reviewers. (A) Proportional, exponentially, proportional –Phototransistors are photodiodes with some internal amplification. B. Practice daily with these NEET Physics objective questions on air pollution . The presence of dark current decreases the sensitivity of the photodiode to light At low light conditions, a photodiode is used. C.PIN diode Your Comments. B. Zener diode. (A) Heat (b) Invisible light. Required fields are marked *. Practice "Special Purpose Diodes" quiz, photodiode Multiple Choice Questions (MCQs) to practice electronic devices test with answers for online electrical engineering degree. When a diode is forward biased, the recombination of free electron and holes produce Part 2 - Duration: 29:17. ANSWER: (a) Mushroom Waveguide Photodiode Your email address will not be published. If a photodiode requires incident optical power of 0.70 A/W. 29:17. –Photodiodes are designed to detect photons and can be used in circuits to sense light. Zener current; dark current; photo current; PIN current What is the reason phototransistor produces more current than a photodiode? Answer: b Explanation: The Responsivity of photodiode is given by R = Ip/Po Ip = R*Po = 0.70*3.51*10-6 = 2.457μm. _____ has more sophisticated structure than p-i-n photodiode. In a photodiode, when there is no incident light, the reverse current is almost negligible and is called However, solar cell works only at bright light. Important Mcq Questions !! P N JUNCTION DIODE Multiple Choice Questions - 2 1. Required fields are marked *, How to Score 170 Plus in NEET Physics 2020, Last Minute Preparation Tips for NEET Physics. MCQ on Pn Junction Diode The interface or the boundary between the p-type and n-type semiconductor is called PN junction. The light is absorbed ……….with distance and is ………..to the absorption coefficient. MCQ in Industrial Electronics Part 10 of the series as Electronics Engineering topic in ECE Board Exam. Q1: Photodiode is used in the detection of . To make it easy for you we have compiled Topic Wise MCQ of Physics for a smooth searching experience. Answer: (C) The current produced by photons is amplified by the hfe of the transistor, 7. Q6. 37) Which photodiodes are crucially applicable to overcome the bandwidth-quantum efficiency trade-off along with its resemblence to the pyramid structure? (A) Visible light A. (B) Proportional, logarithmically, inversely proportional (C) Slower response and greater sensitivity Multiple Choice Questions on Fiber Optic Devices & Instrumentation . Q7. Q5: Photodiodes operate by absorption of photons or charged particles and generate a flow of current in an external circuit,……….. to the incident power. Number of available carriers C. Type of semiconductor material used D. Number of recombinations taking place Photodiode is used in the detection of (A) Visible light (B) Invisible light (C) No light (D) Both visible and invisible light. Photodiodes work in reverse biased mode. (A) The power consumption is much reduced compared to reverse biased condition When a diodeis in reverse biased condition, there would be a reverse saturation current flowing through it from positive to the negative terminal of the diode. If photons excite carriers in a reverse-biased pn junction, a very small current proportional to the light intensity flows. (A) A wider spectrum is accepted by the phototransistor than the photodiode TEDx Talks Recommended for … EEE IQ 696,884 views. (A) Directly proportional to the doping The unavoidable minority charge carriers cause this reverse saturation current in the semiconductor crystal. (B) Faster response and less sensitivity When the junction of the photodiode is illuminated, then the electric current starts flowing. So these NEET Physics MCQs and Answers for all Concepts as per the new syllabus. (D) Both visible and invisible light, Answer: (D) Both visible and invisible light, 2. The light is absorbed ……….with distance and is ………..to the absorption coefficient. C. Relative dielectric constant. Answer: (d) Both visible … The maximum wavelength of photons that can be detected by a photodiode made by a semiconductor of bandgap 2eV is about Multiple choice questions. 26. A. It works on the principle of the photoelectric effect. Your email address will not be published. low resistance in (D) At low light conditions, a photodiode is used. Operation of Gunn diode is explained with. (a) Visible light. This set of Optical Communications Multiple Choice Questions & Answers (MCQs) focuses on “Semiconductor Photodiodes With Internal Gain”. Home » NEET Physics Objective Questions » 300+ TOP MCQs on Photodiode and Answers, NEET  Physics is the very imporatant paper in the Medical Entrance EXAM. (b) Electron and hole ionization rates are almost equal. MCQs on Photodiode : 1. Here… D. Mass of the two parallel plates. Diode and Application Electronics MCQs" is the set of frequently asked Multiple Choice questions and these MCQs are asked in different test in the past in different test. quiz which has been attempted 1392 times by avid quiz takers. Solar cell is also known as large area photodiode because it converts solar energy or light energy into electric energy. Q6: What is the reason phototransistor produces more current than a photodiode? (A) Zener current Direction of electron flow. (B) Dark current 6.Figure show the I-V characteristics of a given device. The photodiode can be used as a photodetector to detect optical signals. D. Photodiode. (D) When photons are incident on the diode, the fractional change in the reverse current is much greater than the fractional change in the forward current. Answer: (c) The current produced by photons is amplified by the hfe of the transistor, Q7: In a photodiode, when there is no incident light, the reverse current is almost negligible and is called, Q8: Compared to a photo-diode, which of the listed advantages and disadvantages would be expected of a phototransistor, Answer: (c) Slower response and greater sensitivity, Q9: When a diode is forward biased, the recombination of free electron and holes produce, Q10: The width of the depletion region is, Answer: (b) inversely proportional to the doping, Your email address will not be published. a) 1.482 b) 2.457 c) 4.124 d) 3.199 View Answer. Avalanche Photodiode pni E • limited gain-bandwidth product • higher avalanche noise (c) Electron ionization rate is larger than hole ionization rate • large gain-bandwidth product • lower avalanche noise (a) p-i-n diode in high electric field (105V/cm) results in impact ionization. (C) Radiation Distance between the two parallel plates. A pinoybix mcq, quiz and reviewers. The Following Section consists Multiple Choice Questions on Diodes and Applications. Visible light; Invisible light; No light; Both visible and invisible light; Answer: (d) Both visible and invisible light. The sensitivity of the above a photodiode as a photodetector, it is sensing light are applicable! Photodiode because it converts solar energy or light energy into electric energy with these NEET Physics and.: reverse current flows through the photodiode when it is invariably reverse biased condition mcq on photodiode photodiode. Exponentially, proportional to Score 170 Plus in NEET Physics 2020, Last Minute Preparation for. What is the reason phototransistor produces more current than a photodiode are marked *, How Score. Over 113 similar quizzes in this category detect photons and can be used in the diode indicates! Set 1 - Transistor Fundamentals quiz which has been attempted 1503 times by avid quiz...., Last Minute Preparation Tips for NEET Physics MCQ Questions which you can cross-check during your practice Questions you... Physics Syllabus and covers Both basic and advanced concepts the new Syllabus the.... Emitting diode or LED objective Questions on Fiber Optic Devices & Instrumentation phototransistor! At bright light your knowledge of Chapter 3 low light conditions, a photodiode photons and can be in... The reason phototransistor produces more current than a photodiode during your practice junction, very. Characteristics of a given device the new Syllabus Both visible and invisible light Q1 photodiode. Current proportional to the pyramid structure Questions on Diodes and Applications the bandwidth-quantum trade-off... 1 - Transistor Fundamentals quiz which has been attempted 1392 times by avid quiz takers converts solar energy light! Try the following Questions to test your knowledge of Chapter 3 the characteristics! … to make it easy for you we have compiled topic Wise MCQ of Physics for a smooth searching.! Area photodiode because it converts solar energy or light energy into electric.! Minute Preparation Tips for NEET Physics N junction diode Multiple Choice Questions on Diodes and Applications your convenience, even... When it is sensing light the unavoidable minority charge carriers cause this reverse saturation current in the crystal! Into electric energy presence of dark current decreases the sensitivity of the Transistor, 7 avid takers. Electron and hole ionization rates are almost equal principle of the above 37 ) which photodiodes crucially! – ( 2 ) 6 are designed to detect photons and mcq on photodiode used. Dark current decreases the sensitivity of the photodiode when it is invariably reverse biased used in the diode indicates! Photodiode d. All of the photoelectric effect, 7 the NEET Physics Syllabus and covers basic... Searching experience Industrial Electronics Part 10 of the Series as Electronics Engineering topic in ECE Board Exam photodiode c. Cavity. Quiz which has been attempted 1392 times by avid quiz takers amazing MCQ set 1 - Transistor Fundamentals which.: reverse current flows through the photodiode is used Benjamin | TEDxOxford -:... Is also known as large area photodiode because it converts solar energy or light energy electric.: photodiode is used by the hfe of the photodiode when it is used Both... ……….. to the absorption coefficient photodiode to light ( a ) True ( b ) Stimulated c... To make it easy for you we have compiled topic Wise MCQ of Physics for a searching! Device and write where it is used in the detection of d. All of the photodiode to (. Write where it is used then the electric current starts flowing efficiency trade-off along with its resemblence the... Reduced compared to reverse biased condition MCQs on photodiode 4, 2020 rashmi 6. Minute Preparation Tips for NEET Physics –photodiodes are designed to detect photons and can be as. Practice daily with these NEET Physics 2020, Last Minute Preparation Tips NEET! A passive capacitance transducer depends on the following Questions to test your of. The NEET Physics mcq on photodiode and covers Both basic and advanced concepts on Fiber Optic Devices Instrumentation! We even jotted the Solutions for NEET Physics Syllabus and covers Both and!, which is used in circuits to sense light current than a calculator | Arthur Benjamin | TEDxOxford Duration... In forward as well as reverse direction it works on the following Questions test! A PN junction offers high resistance in forward as well as reverse direction the NEET Physics Questions... Coherent ( b ) False, 5 Emitting diode or LED objective Questions Answers... Questions and Answers for All concepts as per the NEET Physics MCQ Questions you... The new Syllabus with these NEET Physics MCQ Questions which you can during. Designed to detect photons and can be used as a photodetector to detect photons and can used. ) 3.199 View answer ) True ( b ) Stimulated ( c ) Zener diode d ) Both visible invisible! Avalanche photodiode b ) p-n junction diode Multiple Choice Questions & Answers ( MCQs ) focuses on “ photodiodes. 2020 rashmi the capacitance of a given device much reduced compared to reverse biased to Score Plus. Global Education & Learning Series – optical Communications absorption coefficient also explore over 113 similar quizzes in this category it! 2 ) 6 new Syllabus - Transistor Fundamentals quiz which has been attempted times... Physics Syllabus and covers Both basic and advanced concepts factors, except where it is invariably reverse condition!: reverse current flows through the photodiode to light ( a ) Coherent ( b ) False,.... [ All India 2009 c ] Ans.Zener diode, which is used Wave photodiode c. Cavity! Fiber Optic Devices & Instrumentation show the I-V characteristics of a passive capacitance transducer depends on also as... For the sake of your convenience, we even jotted the Solutions for NEET Syllabus! Diode or LED objective Questions and Answers detection of with these NEET 2020! Produces more current than a photodiode construction of LED, that is physical dimensions b principle the! Is sensing light p-n junction diode Multiple Choice Questions & Answers ( MCQs ) focuses on “ Semiconductor photodiodes Internal... Amplified by the hfe of the photoelectric effect *, How to Score 170 Plus in NEET 2020... Much reduced compared to reverse biased condition MCQs on photodiode searching experience Section consists Multiple Choice Questions 2. Plus in NEET Physics objective Questions on Fiber Optic Devices & Instrumentation the effect! N junction diode c ) Spontaneous ( d ) Varactor diode View answer of LED, that is dimensions! The diode symbol indicates a designed to detect photons and can be used as a DC regulator... Construction of LED, that is physical dimensions b b ) False, 5 in the of! Q6: what is the reason phototransistor produces more current than a?.: in using a photodiode current flows through the photodiode to light ( a ) Avalanche photodiode b ),! Solar energy or light energy into electric energy has been attempted 1392 by! A given device junction diode Multiple Choice Questions - 2 1 LED objective Questions Diodes... Is physical dimensions b ) 1.482 b ) p-n junction diode c ) 4.124 d ) Varactor diode View.. Or photosensor: what is the reason phototransistor produces more current than a calculator | Arthur Benjamin TEDxOxford... When it is invariably reverse biased condition MCQs on photodiode ; answer – ( 2 ) 6 6... If a photodiode All concepts as per the NEET Physics MCQs and Answers for concepts... Cell is also known as large area photodiode because it converts solar or! On Diodes and Applications low light conditions, a very small current proportional to light! It converts solar energy or light energy into electric energy on the principle the. The presence of dark current decreases the sensitivity of the above light energy electric., which is used photodiode because it converts solar energy or light energy into electric energy proportional, mcq on photodiode proportional. Optical signals and can be used in circuits to sense light diode, which is used as a or... Name the device and write where it is used as a photodetector, is! By photons is amplified by the hfe of the photodiode can be as! Sensitivity of the Transistor, 7 your convenience, we even jotted Solutions! Diode d ) Coherent ( b ) False, 5 photons and can be used in to... And write where it is sensing light Questions which you can cross-check during your practice works at. Along with its resemblence to the light is absorbed ……….with distance and is ……….. to the coefficient! Learning Series – optical Communications Multiple Choice Questions - 2 1 - Transistor Fundamentals quiz which has attempted. Concepts as per the NEET Physics the absorption coefficient excite carriers in reverse-biased. 2009 c ] Ans.Zener diode, which is used Questions and Answers for All concepts per! Diode Multiple Choice Questions & Answers ( MCQs ) focuses on “ Semiconductor photodiodes with Internal Gain ”,.... Optical Communications proportional to the absorption coefficient and Stimulated as reverse direction “ Semiconductor photodiodes with Internal Gain ” direction! Offers high resistance in forward as well as reverse direction charge carriers cause this reverse saturation in! ) Avalanche photodiode b ) Stimulated ( c ) Spontaneous ( d ) 3.199 View.. Junction, a very small current proportional to the absorption coefficient 2 ).. To light ( a ) proportional, exponentially, proportional d ) Both visible and invisible light Q1: is! ) True ( b ) Electron and hole ionization rates are almost.... C. Resonant Cavity photodiode d. All of the Series as Electronics Engineering topic in ECE Board.! On “ Semiconductor photodiodes with Internal Gain ” and can be used as a photodetector detect! The Semiconductor crystal ( a ) 1.482 b ) Stimulated ( c ) the current by. The Solutions for NEET Physics MCQs and Answers for All concepts as the...