Quantization of Energy Class 12 NEB 01 Bohr’s Postulates Explained Radius of Electron in nth Orbit

Quantization of Energy | Class 12 NEB Physics | Bohr’s Postulates Explained | Radius of Electron in nth Orbit
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Ace your Class 12 NEB Physics exam with this complete and visually explained lecture on Quantization of Energy, Bohr’s Postulates, and the Radius of Electron in the nth Orbit.
This video covers all important derivations, formulas, concepts, and exam-oriented tricks strictly according to the NEB Nepal syllabus.

🎯 What You Will Learn in This Video:
✔ Meaning of quantization of energy
✔ Bohr’s three postulates
✔ Derivation of radius of electron in nth orbit
✔ Relation between n, rₙ, and energy levels
✔ Numerical questions for Class 12 NEB
✔ Exam-important points + shortcuts

📘 Perfect for:
– Class 11 & Class 12 NEB Physics students
– JEE/Entrance aspirants (IOE, CEE Nepal)
– Quick revision before board exam
– Beginners learning atomic structure

🧾 Formula Covered:

rₙ = n² × a₀

Eₙ = −13.6 eV / n²

mvr = nh/2π

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