Modern Physics is one of the highest yield-per-page chapters. Photoelectric effect (Einstein's equation), de Broglie wavelength, Bohr model (radii, energies, transitions), nuclear binding energy, half-life and decay constant — these are the formulas, and almost every question reduces to plugging values in. Semiconductor questions tend to be conceptual: PN junction, biasing, logic gates.
NCERT chapters to cover
- 📘Class 12 Ch 11: Dual Nature of Radiation and Matter
- 📘Class 12 Ch 12: Atoms
- 📘Class 12 Ch 13: Nuclei
- 📘Class 12 Ch 14: Semiconductor Electronics
Exam tips
- 1de Broglie wavelength: λ = 12.27/√V Å for an accelerated electron — comes up regularly.
- 2Bohr radius for hydrogen: r_n = 0.529n² Å. Energy: E_n = −13.6/n² eV. Memorize.
- 3Half-life formula: t₁/₂ = ln2/λ = 0.693/λ.
Practice Modern Physics
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FAQ
How many Modern Physics questions come in NEET?▾
Based on NEET past papers from 2018–2025, Modern Physics typically delivers 5–6 questions per year.
Which NCERT chapters cover Modern Physics?▾
For NEET Modern Physics, study Class 12 Ch 11: Dual Nature of Radiation and Matter; Class 12 Ch 12: Atoms; Class 12 Ch 13: Nuclei; Class 12 Ch 14: Semiconductor Electronics.
What's the best way to prepare Modern Physics for NEET?▾
de Broglie wavelength: λ = 12.27/√V Å for an accelerated electron — comes up regularly. Bohr radius for hydrogen: r_n = 0.529n² Å. Energy: E_n = −13.6/n² eV. Memorize.