Engineering Physics Unit 1 – Quantum Mechanics: AKTU previous year questions
47 AKTU questions from Unit 1 (Quantum Mechanics) asked in 2021–2026, tagged by marks, year and topic. In short: about 26 marks of every paper come from this unit; the most asked topic is Particle in a Box (12 times); 42 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 1 previous year questions
- Calculate the energy difference between the ground state and the first excited state for an electron in a one-dimensional rigid box of length 10⁻¹⁰ m. (2 marks, 2026, Particle in a Box)
- Describe the Davisson–Germer experiment with a neat diagram. How does this experiment verify de Broglie's hypothesis of matter waves? (7 marks, 2026, de-Broglie Matter Waves)
- Explain the concept of black body radiation and state the main features of Planck's radiation law. (7 marks, 2026, Blackbody Radiation Planck Theory)
- Write and solve the Schrödinger wave equation for a particle in a one-dimensional infinite potential box and obtain its eigenfunctions and eigenvalues. (7 marks, 2026, Particle in a Box)
- State the assumptions made by the Planck's to explain black body radiation curve. (2 marks, 2025, Blackbody Radiation Planck Theory)
- What is Wein's displacement law? (2 marks, 2025, Blackbody Radiation Planck Theory)
- Describe the term wave packet in Quantum Mechanics. (2 marks, 2025, de-Broglie Matter Waves)
- What is de Broglie wave for a moving particle at temperature T? (2 marks, 2025, de-Broglie Matter Waves)
- Derive Schrodinger's time independent wave equation for a free particle and give the physical interpretation of wave function. (7 marks, 2025, Schrodinger Wave Equation)
- Describe the experiment of Davisson and Germer to demonstrate the wave character of electrons. (7 marks, 2025, de-Broglie Matter Waves)
- Describe the experiment of Davisson and Germer to demonstrate the wave character of electrons. (7 marks, 2025, de-Broglie Matter Waves)
- A particle is moving in one dimensional potential box (of infinite height) of width 20 Å. Calculate the probability of finding the particle within an interval of 10 Å at the centre of the box when it is in its state of least energy. (7 marks, 2025, Particle in a Box)
Most asked Unit 1 topics
- Particle in a Box – asked 12 times
- Blackbody Radiation Planck Theory – asked 11 times
- de-Broglie Matter Waves – asked 10 times
Unit 1 question pattern
- 2-mark questions: 17 asked in 2021–2026
- 7-mark questions: 21 asked in 2021–2026
- 10-mark questions: 9 asked in 2021–2026
- About 26 marks from Unit 1 in every paper
- 42 questions were asked again in a later year
Unit 1 questions year by year
- 2026: 4 Unit 1 questions asked (23 marks across that year's papers)
- 2025: 10 Unit 1 questions asked (50 marks across that year's papers)
- 2024: 8 Unit 1 questions asked (46 marks across that year's papers)
- 2023: 10 Unit 1 questions asked (50 marks across that year's papers)
- 2022: 10 Unit 1 questions asked (68 marks across that year's papers)
- 2021: 5 Unit 1 questions asked (34 marks across that year's papers)