Engineering Physics Unit 5 – Superconductors and Nano-Materials: AKTU previous year questions
28 AKTU questions from Unit 5 (Superconductors and Nano-Materials) asked in 2023–2026, tagged by marks, year and topic. In short: about 17 marks of every paper come from this unit; the most asked topic is Superconductivity Basics (9 times); 23 questions came back in a later year. The latest ones are listed below; on the page you can filter them by 2-mark or long questions, topic and repeats.
Unit 5 previous year questions
- State any two important properties of quantum dots and mention their significance. (2 marks, 2026, Nanomaterials Introduction Properties)
- What is meant by persistent current? (2 marks, 2026, Superconductivity Basics)
- Explain Type-I and Type-II superconductors. (7 marks, 2026, Types of Superconductors)
- What is the critical magnetic field? How does it vary with temperature? Critical temperature of superconductor when no magnetic field is applied is Tc. Find the temperature at which the critical field becomes half of its value at 0 K. (7 marks, 2026, Superconductivity Basics)
- Explain the method of preparation of Nanomaterials (i) Sol-Gel method and (ii) Chemical Vapour Deposition methods in detail. (7 marks, 2026, Fabrication of Nanomaterials)
- Show that perfect diamagnetism is an essential property of the superconductor. (2 marks, 2025, Superconductivity Basics)
- Discuss the term Quantum Well and Quantum Wire. (2 marks, 2025, Nanomaterials Introduction Properties)
- Explain type I and II superconductors. For a specimen of superconductor, the critical fields are 1.4 x 10⁵ and 4.2 x 10⁵ A/m for temperature 14K and 13K respectively. Calculate the transition temperature and fields at 0 K and 4.2 K. (7 marks, 2025, Types of Superconductors)
- Discuss Meissner effect. Show that perfect diamagnetism and zero resistivity are two independent and essential properties of the superconductor. (7 marks, 2025, Superconductivity Basics)
- The superconducting transition temperature of Lead is 7.26 K. The initial field at 0 K is 64 × 10³ Amp m⁻¹. Calculate the critical field at 5 K. What are nano materials? Explain briefly the basic concepts of Quantum dot, Quantum wire and quantum well? (7 marks, 2025, Superconductivity Basics)
- Describe the Meissner effect and differentiate between Type I and Type II superconductors on the basis of their magnetic behavior. (7 marks, 2025, Types of Superconductors)
- Explain the term top-down approach for the fabrication of nano-materials. Describe CVD method for the synthesis of nano-materials with a suitable diagram. (7 marks, 2025, Fabrication of Nanomaterials)
Most asked Unit 5 topics
- Superconductivity Basics – asked 9 times
- Nanomaterials Introduction Properties – asked 8 times
- Types of Superconductors – asked 7 times
Unit 5 question pattern
- 2-mark questions: 9 asked in 2023–2026
- 7-mark questions: 19 asked in 2023–2026
- About 17 marks from Unit 5 in every paper
- 23 questions were asked again in a later year
Unit 5 questions year by year
- 2026: 5 Unit 5 questions asked (25 marks across that year's papers)
- 2025: 7 Unit 5 questions asked (39 marks across that year's papers)
- 2024: 8 Unit 5 questions asked (41 marks across that year's papers)
- 2023: 8 Unit 5 questions asked (46 marks across that year's papers)