NCERT Solutions for Class 12 Physics Chapter 11 Dual Nature of Radiation and Matter


The dual nature of matter and the dual nature of radiation were revolutionary concepts of physics. At the beginning of the twentieth century, scientists unravelled one of the best-kept secrets of nature – the wave-particle duality or the dual nature of matter and radiation. Everything is a wave and a particle! Electric Discharge: The passage of an electric current through a gas is called electric discharge. Photoelectric Emission: Electrons emitted from a metal surface with the help of suitable electromagnetic radiations. The dual nature of Radiation and Matter introduces students to the concept of matter that propagates through radiation. Under the close observation of a microscope, we can see matter exists as both a wave as well as a particle.

Some of the major topics covered in this chapter are Einstein’s Photoelectric Emission, Emission of Electrons, Nature of Matter- Wave and Particle, Study of Photoelectric effect through experimentation and Davisson and Germer Experiment.