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Page 1 2024 Q1 - 2024 (01 Feb Shift 1) In the given circuit if the power rating of Zener diode is 10mW, the value of series resistance ?? ?? to regulate the input unregulated supply is: [We changed options. In official NTA paper no option was correct.] (1) 5kO (2) 10O (3) 1kO (4) None of these Q2 - 2024 (01 Feb Shift 2) Conductivity of a photodiode starts changing only if the wavelength of incident light is less than 660nm. The band gap of photodiode is found to be ?? 8 eV. The value of X is ; (Given, h = 6.6 × 10 -34 Js, e = 1.6 × 10 -19 C ) (1) 15 (2) 11 (3) 13 Page 2 2024 Q1 - 2024 (01 Feb Shift 1) In the given circuit if the power rating of Zener diode is 10mW, the value of series resistance ?? ?? to regulate the input unregulated supply is: [We changed options. In official NTA paper no option was correct.] (1) 5kO (2) 10O (3) 1kO (4) None of these Q2 - 2024 (01 Feb Shift 2) Conductivity of a photodiode starts changing only if the wavelength of incident light is less than 660nm. The band gap of photodiode is found to be ?? 8 eV. The value of X is ; (Given, h = 6.6 × 10 -34 Js, e = 1.6 × 10 -19 C ) (1) 15 (2) 11 (3) 13 (4) 21 Q3 - 2024 (27 Jan Shift 1) Which of the following circuits is reverse - biased? (1) (2) (3) (4) +2V ? Mu +4 V Page 3 2024 Q1 - 2024 (01 Feb Shift 1) In the given circuit if the power rating of Zener diode is 10mW, the value of series resistance ?? ?? to regulate the input unregulated supply is: [We changed options. In official NTA paper no option was correct.] (1) 5kO (2) 10O (3) 1kO (4) None of these Q2 - 2024 (01 Feb Shift 2) Conductivity of a photodiode starts changing only if the wavelength of incident light is less than 660nm. The band gap of photodiode is found to be ?? 8 eV. The value of X is ; (Given, h = 6.6 × 10 -34 Js, e = 1.6 × 10 -19 C ) (1) 15 (2) 11 (3) 13 (4) 21 Q3 - 2024 (27 Jan Shift 1) Which of the following circuits is reverse - biased? (1) (2) (3) (4) +2V ? Mu +4 V Q4 - 2024 (27 Jan Shift 2) The truth table of the given circuit diagram is: (1) (2) (3) (4) Page 4 2024 Q1 - 2024 (01 Feb Shift 1) In the given circuit if the power rating of Zener diode is 10mW, the value of series resistance ?? ?? to regulate the input unregulated supply is: [We changed options. In official NTA paper no option was correct.] (1) 5kO (2) 10O (3) 1kO (4) None of these Q2 - 2024 (01 Feb Shift 2) Conductivity of a photodiode starts changing only if the wavelength of incident light is less than 660nm. The band gap of photodiode is found to be ?? 8 eV. The value of X is ; (Given, h = 6.6 × 10 -34 Js, e = 1.6 × 10 -19 C ) (1) 15 (2) 11 (3) 13 (4) 21 Q3 - 2024 (27 Jan Shift 1) Which of the following circuits is reverse - biased? (1) (2) (3) (4) +2V ? Mu +4 V Q4 - 2024 (27 Jan Shift 2) The truth table of the given circuit diagram is: (1) (2) (3) (4) Q5 - 2024 (29 Jan Shift 1) In the given circuit, the breakdown voltage of the Zener diode is 3.0V. What is the value of ?? 2 ? (1) 3.3mA (2) 5.5mA (3) 10mA (4) 7mA Q6 - 2024 (29 Jan Shift 2) The truth table for this given circuit is : Page 5 2024 Q1 - 2024 (01 Feb Shift 1) In the given circuit if the power rating of Zener diode is 10mW, the value of series resistance ?? ?? to regulate the input unregulated supply is: [We changed options. In official NTA paper no option was correct.] (1) 5kO (2) 10O (3) 1kO (4) None of these Q2 - 2024 (01 Feb Shift 2) Conductivity of a photodiode starts changing only if the wavelength of incident light is less than 660nm. The band gap of photodiode is found to be ?? 8 eV. The value of X is ; (Given, h = 6.6 × 10 -34 Js, e = 1.6 × 10 -19 C ) (1) 15 (2) 11 (3) 13 (4) 21 Q3 - 2024 (27 Jan Shift 1) Which of the following circuits is reverse - biased? (1) (2) (3) (4) +2V ? Mu +4 V Q4 - 2024 (27 Jan Shift 2) The truth table of the given circuit diagram is: (1) (2) (3) (4) Q5 - 2024 (29 Jan Shift 1) In the given circuit, the breakdown voltage of the Zener diode is 3.0V. What is the value of ?? 2 ? (1) 3.3mA (2) 5.5mA (3) 10mA (4) 7mA Q6 - 2024 (29 Jan Shift 2) The truth table for this given circuit is : (1) (2) (3) (4) Q7 - 2024 (30 Jan Shift 1) A Zener diode of breakdown voltage 10V is used as a voltage regulator as shown in the figure. The current through the Zener diode is (1) 50mA (2) 0Read More
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FAQs on Semiconductor Electronics: Materials Devices & Simple: JEE Mains Previous Year Questions (2021-2024) - Physics for JEE Main & Advanced
| 1. How does a semiconductor material differ from a conductor or an insulator? |  |
Ans. A semiconductor material has electrical conductivity between that of a conductor and an insulator. It can conduct electricity under certain conditions, unlike insulators, but not as easily as conductors.
| 2. What are the key properties of semiconductor materials that make them suitable for electronic devices? | |
Ans. Semiconductor materials have properties like varying conductivity, bandgap energy, and doping capabilities, which make them ideal for creating electronic devices like diodes, transistors, and integrated circuits.
| 3. How does doping affect the conductivity of a semiconductor material? | |
Ans. Doping introduces impurities into a semiconductor material to alter its electrical properties. N-type doping adds electrons to increase conductivity, while P-type doping creates electron holes to enhance conductivity in a different way.
| 4. Can you explain the functioning of a diode in simple terms? | |
Ans. A diode allows current to flow in one direction while blocking it in the opposite direction. It consists of P-type and N-type semiconductor materials joined together, creating a barrier that permits current flow only when a certain voltage is applied.
| 5. What role do transistors play in electronic devices, and how do they amplify electrical signals? | |
Ans. Transistors are semiconductor devices that can amplify or switch electronic signals. They work by controlling the flow of current between the emitter and collector terminals based on the voltage applied to the base terminal, allowing for signal amplification.
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