BT-201 RGPV B.Tech
Engineering Physics (EP)
Previous year papers and the official syllabus are free to read, no account needed.
Previous Year Papers
8 papers, latest Dec 2025
- BT-201 paper, Dec 2025
- BT-201 paper, Jun 2025
- BT-201 paper, Dec 2024
- BT-201 paper, Jun 2024
- BT-201 paper, Dec 2023
- BT-201 paper, Jun 2023
Syllabus, notes and important questions for BT-201
Syllabus units
Topics as the official RGPV syllabus lists them.
Unit 1 Wave nature of particles and the Schrödinger equation 10 topics
- Introduction to quantum mechanics
- Wave nature of particles
- Operator formalism
- Time‑dependent Schrödinger equation
- Time‑independent Schrödinger equation
- Particle in a one‑dimensional box
- Born interpretation of the wavefunction
- Free‑particle wavefunction and wave‑packets
- Group velocity (v_g) and phase velocity (v_p) relations
- Heisenberg uncertainty principle
Unit 2 Wave optics 6 topics
- Huygens’ principle
- Superposition of waves
- Interference of light: Young’s double‑slit experiment, Newton’s rings, Michelson interferometer, Mach‑Zehnder interferometer
- Fraunhofer diffraction from a single slit and a circular aperture
- Rayleigh criterion for resolution and its application to vision
- Diffraction gratings and their resolving power
Unit 3 Introduction to solids 10 topics
- Free‑electron theory of metals
- Fermi level for intrinsic and extrinsic semiconductors
- Density of states
- Bloch’s theorem for electrons in a periodic potential
- Kronig‑Penney model (conceptual overview)
- Origin of energy bands in solids
- Current‑voltage characteristics of p‑n junctions
- Zener diode operation
- Solar cell fundamentals
- Hall effect
Unit 4 Lasers 7 topics
- Einstein A and B coefficients for matter‑radiation interaction
- Population inversion and optical amplification
- Gas lasers: He‑Ne, CO₂
- Solid‑state lasers: ruby, Nd‑based lasers
- Laser beam properties: monochromaticity, coherence, directionality, brightness
- Laser speckles and applications in science, engineering, and medicine
- Introduction to optical fibers: acceptance angle, numerical aperture, V‑number, attenuation
Unit 5 Electrostatics in vacuum 9 topics
- Electric field and electrostatic potential for various charge distributions
- Electric displacement vector
- Basic concepts of dielectrics
- Vector calculus operators: gradient, divergence, curl
- Stokes’ theorem
- Gauss’ theorem
- Continuity equation for charge density
- Maxwell’s equations in vacuum and non‑conducting media
- Poynting vector and electromagnetic energy flow
Unit 6 == END OF UNITS==
The syllabus lists no separate topics for this unit.
Exam insights
Counted from 6 past BT-201 papers.
Marks asked per paper, by unit
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Unit 1 Wave nature of particles and the Schrodinger equation 21 marks
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Unit 2 Wave optics 22 marks
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Unit 3 Introduction to solids 20 marks
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Unit 4 Lasers 23 marks
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Unit 5 Electrostatics in vacuum 16 marks
Average marks of the questions from each unit in one paper. You answer only some of them, so the total is more than the paper’s maximum.
Asked again and again
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Derive the equation of continuity for current density from the principle of charge conservation, stating assumptions, and explain its significance.
Asked 4 times: 2025, 2024, 2023, 2022
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State and prove/explain Heisenberg's uncertainty principle in detail.
Asked 4 times: 2024, 2023, 2022
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Explain the construction and working principle of the Mach-Zehnder interferometer with a suitable ray diagram.
Asked 3 times: 2025, 2023, 2022