The wave nature of light can be observed in the phenomena of interference, diffraction and polarisation. Last Updated on May 3, 2020 By Mrs Shilpi Nagpal 5 Comments. CBSE Class 12 Physics Chapter 11 Dual Nature of Radiation and Matter Notes in PDF are available for free download in myCBSEguide mobile app. Important Questions for Class 12 Physics Chapter 11 Dual Nature of Radiation and Matter Class 12 Important Questions Dual Nature of Radiation and Matter Class 12 Important Questions Very Short Answer Type. Dual Nature of Radiation and Matter Class 12 Notes Chapter 11 1. In this Chemistry video in Hindi for class 11 we explained wave nature of electromagnetic radiation. By absorbing energy from the incident electromagnetic radiation, ... CBSE Class 12th Physics Notes: Dual Nature of Radiation and Matter Part - II. Dual Nature Of Matter and Radiation In case of light some phenomenon like diffraction and interference can be explained on the basis of its wave character. Light is also an electromagnetic radiation which contains frequencies. These packets of energy can be treated as particles. Unlike emission spectrum, it consists of dark lines on the bright background. An electromagnetic wave has dual (wave–particle) nature. Louis de Broglie, a French physicist, in 1924, suggested that all microscopic as well as macroscopic objects possesses dual character. Photoelectric effect occurs when light of frequency greater than threshold frequency fall on metal plate, electrons get emitted from the metal surface. Electromagnetic nature of radiations is explained by James Maxwell (1870). The wavelength of the wave associated with any material particle was calculated as: In case of photon, if it is assumed to have a wave character, its energy is given by E = hν where ν is the frequency of the wave and h is Pla… Lect 03: Wave Nature of Matter- De Broglie hypothesis. Required fields are marked *, Dual Behaviour Of Electromagnetic Radiation. Whenever radiation interacts with the matter, it displays particle like properties in contrast to the wavelike properties (interference and diffraction), which it exhibits when it propagates. An electromagnetic wave has dual (wave–particle) nature. Likewise, we witnessed a drastic transformation in the educational mode as well. The localised character is possessed by the particles .Hence electrons has particle character. Ignore the small initial speeds of the electrons. This is called speed of light. Class 11 Chemistry Structure of Atom Black body radiation and Photoelectric effect Particle nature of Electromagnetic radiations : There were two important phenomenon that couldn’t be explained by considering Light with wave character: Ch -- dual nature of radiation and matter. Previously it was only manual books upon which students used to rely thoroughly. It also is a spectrum consisting of radio waves, microwaves, infrared waves, visible light, ultraviolet radiation. According to de Broglie concept, the electron is not only a particle but has a wave character. Dual Behavior of Electromagnetic Radiation. These rays are produced in a discharge tube at a pressure below 0.01 rom of mercury. Spectrum due to the emission of white light by gas at high temperature is known as an emission spectrum. Wavelength is too small for ordinary observation. While photoelectric effect and Compton effect involve energy and momentum transfer, radiation behaves as if it is made of a bunch of particles-photons show particle nature of a wave. de Broglie wavelength of a particle is inversely proportional to its momentum. NCERT solution of Class 12 Physics Chapter 11 eases your work of notes preparation and revision. NCERT solutions for class 12 physics chapter 11 dual nature of radiation and matter additional exercise . Class 12 Physics Chapter 11 Dual Nature of Radiation and Matter Photoelectric effect occurs when light of frequency greater than threshold frequency fall on metal plate, electrons get emitted from the metal surface. • There are four types of electron emission, namely, Thermionic Emission, Photoelectric Emission, Field Emission and secondary emission. Light has a dual nature 1.Sometimes it behaves like a particle (called a photon), which explains how light travels in straight lines ... ALL electromagnetic radiation is light, but our eyes can only see a small portion – called visible light In this blog we will talk minor details of photoelectric effect. wave nature as well as particle nature. Davisson and Germer in 1927 observed that when a beam of electrons is allowed to fall on the surface of nickel crystal and the scattered or reflected rays are received on a photographic plate, a diffraction pattern (consisting of number of concentric rings) similar to that produced by X-ray, is obtained. Download Offline Apps and Solutions based on updated NCERT Books for 2020-21. chapter 11 class 12 physics. 391 Dual Nature of Radiation and Matter polarity is reversed, the electrons are repelled and only the most energetic electrons are able to reach the collector A. Dual nature of radiation and matter class 12 1. Related Categories. The wave nature of light can be observed in the phenomena of interference, diffraction and polarisation. To represent electromagnetic radiation, various kinds of units are used. The wave associated with the particle is called a matter wave or a de Broglie wave. Class 12 Physics Dual Nature of Radiation and Matter Revision Notes. Q.1. 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dual nature of electromagnetic radiation class 11