Semiconductor Electronics: Materials, Devices and Simple Circuits - ISC Class 12 Physics Questions with Answers
25 past-paper questions on Semiconductor Electronics: Materials, Devices and Simple Circuits from ISC Class 12 Physics papers (2027-2019), newest first. Open one to see its answer.
- Explain why resistance of a semiconductor material decreases when its temperature is increased. 2027 · 1 mark · Short answer
- A band gap is the distance between the valence band of electrons and the conduction band. Essentially, the band gap represents… 2026 · 5 marks · Case based
- What is the direction of flow of electrons in a solar cell? (Recall) 2026 · 1 mark · Short answer
- Name an element that is used as a dopant to convert an intrinsic semiconductor to a 'p' type semiconductor. 2026 · 1 mark · One word
- Answer either subparts (i) to (iv) or (v) to (viii). Draw a labelled circuit diagram of a semiconductor diode when it is forward… 2026 · 5 marks · Long answer
- Answer the following questions: What is the effect of increasing the temperature on conductivity of an intrinsic semiconductor?… 2026 · 5 marks · Long answer
- Discovery of semiconducting devices has revolutionised the field of electronics. Earlier, a computer known as first generation… 2025 · 5 marks · Case based
- State any one difference in the energy band diagram of a semiconductor and that of an insulator. 2025 · 1 mark · Short answer
- When a television set (scientifically known as a television receiver) is opened, many components like semiconductor diodes… 2025 · 5 marks · Short answer
- N-type semiconductor is that which has: 2025 · 1 mark · MCQ
- How does the resistance of a semiconductor crystal vary with its temperature? 2025 · 1 mark · Short answer
- If temperature of a block of a semiconducting material is increased, its resistance: 2025 · 1 mark · MCQ
- In an energy band diagram of a certain material, forbidden band is absent. Identify this material. 2025 · 1 mark · Short answer
- The majority charge carriers in a P-type semiconductor are 2024 · 1 mark · MCQ
- In semiconductors, what is meant by “doping”? 2023 · 1 mark · Short answer
- ‘n’ type semiconductor is that which has 2023 · 1 mark · MCQ
- With an increase in the temperature, electrical conductivity of a semiconductor: 2023 · 1 mark · MCQ
- With reference to semiconductor physics, answer the following questions. What is meant by “Forbidden band” of energy levels? In… 2023 · 2 marks · Short answer
- What type of semiconductor is obtained when a crystal of silicon is doped with a trivalent element? 2023 · 1 mark · Short answer
- Explain the following terms: Intrinsic semiconductor. Extrinsic semiconductor. 2022 · 2 marks · Short answer
- State how a p-type semiconductor will be obtained from a pure crystal of a semiconductor. 2022 · 1 mark · Short answer
- State any one difference between energy band diagram of conductors and that of insulators. Give a relation between $\alpha$ and… 2020 · 3 marks · Short answer
- Draw a labelled circuit diagram of a half wave rectifier and give its output waveform. Draw a symbol for NOR gate and write its… 2019 · 5 marks · Drawing
- With reference to semi-conductors answer the following: What is the change in the resistance of the semi-conductor with increase… 2019 · 3 marks · Short answer
- Draw a neat circuit diagram to study the input and output characteristics of a common emitter transistor. Draw the symbol for AND… 2019 · 5 marks · Drawing
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