It was found that certain metals, when irradiated by ultraviolet light, emitted negatively charged particles having small speeds. Also, certain metals when heated to high temperature were found to emit negatively charged particles. The value of e/m of these particles was found to be the same as that for cathode ray particles. These observations thus established that all these particles, although produced under different conditions, were identical in nature. J. J. Thomson, in 1897, named these particles like electrons and suggested that they were fundamental, universal constituents of matter. ( NCERT Solution Dual Nature of Radiation and Matter )

Topics and Subtopics in NCERT Solutions for Class 12 Physics Chapter 11 Dual Nature of Radiation and Matter:

Section NameTopic Name
11Dual Nature of Radiation and Matter
11.1Introduction
11.2Electron Emission
11.3Photoelectric Effect
11.4Experimental Study of Photoelectric Effect
11.5Photoelectric Effect and Wave Theory of Light
11.6Einstein’s Photoelectric Equation: Energy Quantum of Radiation
11.7Particle Nature of Light: The Photon
11.8Wave Nature of Matter
11.9Davisson and Germer Experiment

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

Having these notes and ncert solution can help the students to prepare and learn various class 12 physics concepts in an effective and easy way. All the diagrams, formulas and derivations are given in these notes to help the students acquaint with all the important chapters and concepts. Plus two physics notes includes a quick summary of the chapter, it saves a lot of time for the students.

Apart from the notes, students are also suggested to solve previous year questions papers and sample papers of physics to know the exam pattern and type of questions properly. Visit the links given below to get the question papers and sample papers.

CBSE Website

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