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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 21 of 25 · Physics (Science, Grade 12)

Photons

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

Light delivered in packets: the photoelectric effect that the wave picture cannot explain, Einstein's equation, and the threshold and stopping potential that make it measurable.

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Topics

What the syllabus defines for this chapter

1Quantum nature of radiation and the photon
2Photoelectric effect and its laws
3Einstein's photoelectric equation
4Threshold frequency, threshold wavelength and work function
5Stopping potential and Millikan's verification
6Photocell and its applications