Dual Nature of Matter and Radiation
Dual Nature of Matter and Radiation is an important modern physics chapter for JEE Main.
It explains the wave-particle duality of light and matter, photoelectric effect, de Broglie hypothesis,
and the experimental evidence behind quantum physics. This chapter is highly scoring and formula-based.
Topics Covered
- Wave Nature of Electromagnetic Radiation
- Particle Nature of Light
- Photoelectric Effect
- Einstein’s Photoelectric Equation
- Work Function and Threshold Frequency
- Stopping Potential
- de Broglie Hypothesis
- Matter Waves
- Davisson-Germer Experiment
Important Formulas
Photon Energy:
E = hν = hc/λ
Einstein’s Photoelectric Equation:
hν = Φ + Kmax
Maximum Kinetic Energy:
Kmax = eV0
de Broglie Wavelength:
λ = h/p = h/mv
JEE Main Preparation Tips
- Memorize all photoelectric effect equations.
- Understand graphical relations between stopping potential and frequency.
- Practice numerical problems based on de Broglie wavelength.
- Solve previous year JEE Main questions for concept mastery.
