Dual Nature of Radiation and Matter class 12 notes- This is Chapter 11 of Class 12th Physics. 11.3.2 Hallwachs’ and Lenard’s observations. 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. Dual Nature of Matter and Radiation is one of the most important chapters from modern physics while preparing for all competitive exam because it helps you to understand the dual nature of matter. Repeaters, Vedantu X-ray affects the photographic plate. The wave associated with the particle is called a matter wave or a de Broglie wave. Video explain methods & techniques to solve numericals on particle nature of electromagnetic radiations helpful for CBSE 11 Chemistry Ch.2 structure of atom CBSE 11 Chemistry 01 … Lect 04: Davisson and Germer Experiment Electromagnetic waves travel through the vacuum at a speed of 3 x 108 m/s. 6. Black body radiation. Chapter-11: Dual Nature of Radiation and Matter Dual nature of radiation; Photoelectric effect; Hertz and Lenard’s observations; Einstein’s photoelectric equation-particle nature of light. 02.24 Evidence for the quantized Electronic Energy Levels: Atomic Spectra 2.24 Evidence for the Quantized Electronic Energy Levels - Atomic Spectra . E = hv = hc / λ. where, h = Planck’s constant = 6.63 x 10-34 j-s. E = energy of photon or quantum. These oscillating electrical and magnetic fields are perpendicular to each other and to the direction of propagation of the wave. This is called speed of light. Jan 07, 2021 - Wave Nature of Electromagnetic Radiation Class 11 Video | EduRev is made by best teachers of Class 11. Photoelectric Effect The phenomenon of emission of photoelectron from the surface of metal, when a light beam of suitable frequency is incident on it, is called photoelectric effect. Electromagnetic radiation can be defined as a form of energy that is produced by the movement of electrically charged particles traveling through a matter or vacuum or by oscillating magnetic and electric disturbance. 1.Dual Nature of Radiation Wave theory of electromagnetic radiation explained the phenomenon of interference, diffraction and polarisation. Davisson-Germer experiment (experimental details should be omitted; only conclusion should be explained). We will learn the dual nature of light and electron, quantum mechanics, quantum numbers. Unit 18: Atoms And Nuclei Radio waves, microwaves, infrared light, visible light, ultraviolet light, X-rays and gamma rays are all electromagnetic radiations. They can travel in vacuum or space. CBSE Class 12 Physics Revision Notes Chapter-11 Dual Nature of Matter and Radiation Electron emission: The phenomenon of emission of electrons from the surface of a metal. It is shown in the figure below –. Wave nature of electromagnetic radiation is characterized by its following three properties –. Nucleus was discovered by Rutherford in 1911. Be humble be teachable and always keep learning. $\beta $-rays are negatively charged particle whose e/m ratio is equal to cathode rays’. Matter waves-wave nature of particles; de Broglie relation; Davisson-Germer experiment (experimental details should be omitted; only conclusion should be explained). Properties of Cathode Rays (i) Cathode rays are not electromagnetic rays. 11.2 Electron Emission. Planck explain the distribution of intensity of the radiation from black body as a function of frequency or wavelength at different temperatures. And the corresponding wave related to that matter is called matter wave The spectrum of electromagnetic radiation is given below –. (ii) Cathode rays are deflected by electric field and magnetic field. diffraction etc., but it could not explain the following. This is possible only when you have the best CBSE Class 11 Chemistry study material and a smart preparation plan. 1 | P a g e (Visit for all ncert solutions in text and videos, CBSE syllabus, note and many more) Physics Notes Class 12 Chapter 11 Dual Nature of Radiation and Matter Cathode Rays Cathode rays are the stream of fast moving electrons. They are charge less thus not deflected by fields. Dual Nature of Radiation and Matter (chapter 11) Cathode Rays Cathode rays are the stream of fast moving electrons. To represent electromagnetic radiation, various kinds of units are used. Contrarily, wave nature is prominent when seen in the field of propagation of light. Moreover, the chapter covers various topics that explain a lot of things about the properties, effects, emission, and nature of radiation and matter. Besides, photons assume an essential role in the electromagnetic propagation of energy. Electromagnetic wave theory was successful in explaining the properties of light such as interference. As the wavelength increases, frequency decreases and as the frequency increases wavelength decreases. CBSE Class 12 Physics Chapter 11 Dual Nature of Radiation and Matter Notes in PDF are available for free download in myCBSEguide mobile app. Lect 03: Wave Nature of Matter- De Broglie hypothesis. There are many more useful educational material which the students can download in pdf Electromagnetic spectrum includes radio waves (FM and AM), microwaves, infrared lights, ultraviolet lights, X – rays, gamma rays and visible light. As you can see in the above figure of the electromagnetic spectrum that as the wavelength of a radiation increases its frequency decreases. Reasoning that radiation and matter should be symmetrical in nature, Louis Victor de Broglie attributed a wave-like character to matter (material particles). It can be expressed as –, h = Plank’s constant which is equal to 6.6 × 10⁻³⁴ J. All we can say is that wave-particle duality exists in nature: Under some experimental conditions, a particle appears to act as a particle, and under different experimental conditions, a particle appears to act a wave. Atoms are the foundation of chemistry. Thermodynamics These rays are produced in a discharge tube at a pressure below 0.01 rom of mercury. Would you like to submit your quiz result to the leaderboard. Mass 9.11 x 10 -31kg 1.672614 x 10 -27kg 1.67492 x10 -27kg Electrons were discovered using cathode ray discharge tube experiment. Pro Lite, CBSE Previous Year Question Paper for Class 10, CBSE Previous Year Question Paper for Class 12. Physics Notes by Akhil. In physics, radiation is the emission or transmission of energy in the form of waves or particles through space or through a material medium. Electromagnetic radiation—light—is a form of energy whose behavior is described by the properties of both waves and particles. Find more @learnfatafat Learning the important concepts is very important for every student to get better marks in examinations. The energy of the photon is related to the wavelength of electromagnetic radiation according to: Planck's constant. In reflection, diffraction, interference and refraction X-ray shows wave nature while in photoelectric effect it shows particle nature. On the other hand, photoelectric effect supported particle’s nature … Louis de Broglie, a French physicist, in 1924, suggested that all microscopic as well as macroscopic objects possesses dual character. Hence, the matter is said to possess dual nature, i.e., it has both the properties of a particle and as well as a wave. There is no charge on X-ray thus these are not deflected by the electric field and magnetic field. Some properties of electromagnetic radiation, such as its refraction when it passes from one medium to another are explained best by describing light as a wave. Pro Lite, Vedantu Radio waves, microwaves, infrared light, visible light, ultraviolet light, X-rays and gamma rays are all electromagnetic radiations. 3. The number of waves that pass a given point in one second is called frequency. This is possible only when you have the best CBSE Class 11 Chemistry study material and a smart preparation plan. Class 11 Physics Physical World Fundamental Forces in nature The forces which we see in our day to day life like muscular, friction, forces due to compression and elongation of springs and strings, fluid and gas pressure, electric, magnetic, interatomic and intermolecular forces are derived forces as their originations are due to a few fundamental forces in nature. Dismiss, 01.05 Properties of Matter and their Measurement, 1.05 Properties of Matter and their Measurement, 01.06 The International System of Units (SI Units), 01.08 Uncertainty in Measurement: Scientific Notation, 1.08 Uncertainty in Measurement: Scientific Notation, 01.09 Arithmetic Operations using Scientific Notation, 1.09 Arithmetic Operations Using Scientific Notation, 01.12 Arithmetic Operations of Significant Figures, 1.12 Arithmetic Operations of Significant Figures, 01.17 Atomic Mass and Average Atomic Mass, 02.22 Dual Behaviour of Electromagnetic Radiation, 2.22 Dual Behaviour of Electromagnetic Radiation, 02.23 Particle Nature of Electromagnetic Radiation: Numericals, 2.23 Particle Nature of Electromagnetic Radiation - Numericals, 02.24 Evidence for the quantized Electronic Energy Levels: Atomic Spectra, 2.24 Evidence for the Quantized Electronic Energy Levels - Atomic Spectra, 02.28 Importance of Bohr’s Theory of Hydrogen Atom, 2.28 Importance of Bohr’s Theory of Hydrogen Atom, 02.29 Bohr’s Theory and Line Spectrum of Hydrogen – I, 2.29 Bohr’s Theory and Line Spectrum of Hydrogen - I, 02.30 Bohr’s Theory and Line Spectrum of Hydrogen – II, 2.30 Bohr’s Theory and Line Spectrum of Hydrogen - II, 02.33 Dual Behaviour of Matter: Numericals, 2.33 Dual Behaviour of Matter - Numerical, 02.35 Significance of Heisenberg’s Uncertainty Principle, 2.35 Significance of Heisenberg’s Uncertainty Principle, 02.36 Heisenberg’s Uncertainty Principle: Numericals, 2.36 Heisenberg's Uncertainty Principle - Numerical, 02.38 Quantum Mechanical Model of Atom: Introduction, 2.38 Quantum Mechanical Model of Atom - Introduction, 02.39 Hydrogen Atom and the Schrödinger Equation, 2.39 Hydrogen Atom and the Schrödinger Equation, 02.40 Important Features of Quantum Mechanical Model of Atom, 2.40 Important Features of Quantum Mechanical Model of Atom, 03 Classification of Elements and Periodicity in Properties, 03.01 Why do we need to classify elements, 03.02 Genesis of Periodic classification – I, 3.02 Genesis of Periodic Classification - I, 03.03 Genesis of Periodic classification – II, 3.03 Genesis of Periodic Classification - II, 03.04 Modern Periodic Law and Present Form of Periodic Table, 3.04 Modern Periodic Law and Present Form of Periodic Table, 03.05 Nomenclature of Elements with Atomic Numbers > 100, 3.05 Nomenclature of Elements with Atomic Numbers > 100, 03.06 Electronic Configurations of Elements and the Periodic Table – I, 3.06 Electronic Configurations of Elements and the Periodic Table - I, 03.07 Electronic Configurations of Elements and the Periodic Table – II, 3.07 Electronic Configurations of Elements and the Periodic Table - II, 03.08 Electronic Configurations and Types of Elements: s-block – I, 3.08 Electronic Configurations and Types of Elements - s-block - I, 03.09 Electronic Configurations and Types of Elements: p-blocks – II, 3.09 Electronic Configurations and Types of Elements - p-blocks - II, 03.10 Electronic Configurations and Types of Elements: Exceptions in periodic table – III, 3.10 Electronic Configurations and Types of Elements - Exceptions in Periodic Table - III, 03.11 Electronic Configurations and Types of Elements: d-block – IV, 3.11 Electronic Configurations and Types of Elements - d-block - IV, 03.12 Electronic Configurations and Types of Elements: f-block – V, 3.12 Electronic Configurations and Types of Elements - f-block - V, 03.18 Factors affecting Ionization Enthalpy, 3.18 Factors Affecting Ionization Enthalpy, 03.20 Trends in Ionization Enthalpy – II, 04 Chemical Bonding and Molecular Structure, 04.01 Kossel-Lewis approach to Chemical Bonding, 4.01 Kössel-Lewis Approach to Chemical Bonding, 04.03 The Lewis Structures and Formal Charge, 4.03 The Lewis Structures and Formal Charge, 04.06 Bond Length, Bond Angle and Bond Order, 4.06 Bond Length, Bond Angle and Bond Order, 04.10 The Valence Shell Electron Pair Repulsion (VSEPR) Theory, 4.10 The Valence Shell Electron Pair Repulsion (VSEPR) Theory, 04.12 Types of Overlapping and Nature of Covalent Bonds, 4.12 Types of Overlapping and Nature of Covalent Bonds, 04.17 Formation of Molecular Orbitals (LCAO Method), 4.17 Formation of Molecular Orbitals (LCAO Method), 04.18 Types of Molecular Orbitals and Energy Level Diagram, 4.18 Types of Molecular Orbitals and Energy Level Diagram, 04.19 Electronic Configuration and Molecular Behavior, 4.19 Electronic Configuration and Molecular Behaviour, Chapter 4 Chemical Bonding and Molecular Structure - Test, 05.02 Dipole-Dipole Forces And Hydrogen Bond, 5.02 Dipole-Dipole Forces and Hydrogen Bond, 05.03 Dipole-Induced Dipole Forces and Repulsive Intermolecular Forces, 5.03 Dipole-Induced Dipole Forces and Repulsive Intermolecular Forces, 05.04 Thermal Interaction and Intermolecular Forces, 5.04 Thermal Interaction and Intermolecular Forces, 05.08 The Gas Laws : Gay Lussac’s Law and Avogadro’s Law, 5.08 The Gas Laws - Gay Lussac’s Law and Avogadro’s Law, 05.10 Dalton’s Law of Partial Pressure – I, 05.12 Deviation of Real Gases from Ideal Gas Behaviour, 5.12 Deviation of Real Gases from Ideal Gas Behaviour, 05.13 Pressure -Volume Correction and Compressibility Factor, 5.13 Pressure - Volume Correction and Compressibility Factor, 06.02 Internal Energy as a State Function – I, 6.02 Internal Energy as a State Function - I, 06.03 Internal Energy as a State Function – II, 6.03 Internal Energy as a State Function - II, 06.06 Extensive and Intensive properties, Heat Capacity and their Relations, 6.06 Extensive and Intensive Properties, Heat Capacity and their Relations, 06.07 Measurement of ΔU and ΔH : Calorimetry, 6.07 Measurement of ΔU and ΔH - Calorimetry, 06.08 Enthalpy change, ΔrH of Reaction – I, 6.08 Enthalpy change, ΔrH of Reaction - I, 06.09 Enthalpy change, ΔrH of Reaction – II, 6.09 Enthalpy Change, ΔrH of Reaction - II, 06.10 Enthalpy change, ΔrH of Reaction – III, 6.10 Enthalpy Change, ΔrH of Reaction - III. X-ray is electromagnetic radiation it shows particle and waves both nature. Maxwell’s equation of electromagnetism and Hertz experiments on the generation and detection of electromagnetic waves in 1887 strongly established the wave nature of light. wave nature as well as particle nature. Wavelength and frequency of a wave are inversely proportional. CBSE Class 11 Chemistry Atomic Structure– Get here the Notes for CBSE Class 11 Chemistry Atomic Structure. Register free for online tutoring session to clear your doubts. Last Updated on May 3, 2020 By Mrs Shilpi Nagpal 5 Comments Einstein in 1905 suggested that light has dual nature, i.e. Electromagnetic radiations travel in space and vacuum through oscillating electrical and magnetic fields generated by their particles. Wavelength – The distance of one full cycle of the oscillation is called wavelength or the distance between two adjacent crests or troughs of a wave is called the wavelength. 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