NCERT Book for Class 12 Physics Part 2 – (Chapter 11 – Dual Nature of Radiation and Matter)
Chapter 11 – Dual Nature of Radiation and Matter
This chapter explores the concept that both radiation and matter exhibit dual characteristics, behaving as both particles and waves. It begins with the study of the photoelectric effect, which demonstrates the particle nature of light through the emission of electrons when light falls on a metal surface, supporting the idea of energy quanta or photons. The chapter also introduces de Broglie’s hypothesis, which states that particles such as electrons have wave-like properties, leading to the concept of matter waves. Experimental evidence like electron diffraction further confirms this dual behavior. The chapter bridges classical and modern physics, forming the foundation for quantum mechanics by showing that nature at microscopic levels does not follow classical laws strictly. And it is important for Class 12 board exams and competitive exams like NEET and JEE.
Dual Nature of Radiation and Matter Ncert
