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GyanMul Prep · NEB +2 · Science · Grade 12

Physics (Science, Grade 12)

Everything on these tabs is Physics (Science, Grade 12) only, within NEB +2 Science · Grade 12.

Science · Grade 12 subjects

GyanMul Prep · NEB +2 · Science · Grade 12

Physics (Science, Grade 12)

Everything on these tabs is Physics (Science, Grade 12) only, within NEB +2 Science · Grade 12.

Science · Grade 12 subjects

Chapter 23 of 25 · Physics (Science, Grade 12)

Quantization of Energy

7 topics
Board exam — Modern Physics, 19 marks across 6 chapters
22 solved questions

Energy that comes only in allowed amounts: Bohr's hydrogen atom with its radius, velocity and energy for the nth orbit, the spectral series it predicts, and the wave-particle ideas — de Broglie, Heisenberg — that replaced it.

Practise this chapter Read solved questions

Topics

What the syllabus defines for this chapter

1Bohr's theory of the hydrogen atom and its postulates
2Radius, velocity and energy of an electron in the nth orbit
3Energy level diagram and the spectral series of hydrogen
4de Broglie hypothesis and matter waves
5Heisenberg's uncertainty principle
6X-rays: production, properties and uses
7X-ray diffraction and Bragg's law