Electromagnetic radiation has the dual nature: its exhibits wave properties and … (example curves passed out in class). 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 Question 1. it is the best notes for studying board The spectrum of electromagnetic radiation is given below – Characteristics Of Electromagnetic Waves The inherent characteristic of electromagnetic waves is its frequency. Greater is the frequency of the incident light, greater is the kinetic energy of emitted electron. You might be familiar with antennas in general whether or not you understand the working of an antenna. 3)The radiations possesses wave character and travel with the velocity of light. As red light has minimum frequency and yellow light has higher frequency, therefore the body on heating becomes first red,  then yellow and so on. Frequency (m or n): The no of waves passing through a point in 1 second, unit-sec -1 or Hz. To get fastest exam alerts and government job alerts in India, join our Telegram channel. Electromagnetic spectrum consists of various types of electromagnetic radiations which differ from one another in wavelength or frequency. What are the Characteristics of Photons? Electromagnetic radiation covers a wide range of wavelength, from 10-10µm for cosmic rays to 1010µm for electrical power waves. Lectures by Walter Lewin. Learn the concepts of Class 12 Physics Electromagnetic Waves with Videos and Stories. Limitations of electromagnetic wave theory. The magnetic and the electric fields come at 90° to each other and the combined waves move perpendicular to both electric and magnetic oscillating fields occurring the disturbance. Vibrational modes relevant to NIR: a) Stretching; b) bending (scissoring in plane, rocking in plane, wagging, which is out of plane, and twisting, which is also out of. Characteristics of waves: Amplitude: Maximum displacement from mean position it remains constant with distance except stationary or standing waves. = c); and radiation can have properties of both a wave and a particle. According to Maxwell, varying the electric field gives rise to a magnetic field. Class-11CBSE Board - Theory Of Electromagnetic Radiation And Planck\'s Quantum Theory - LearnNext offers animated video lessons with neatly explained examples, Study Material, FREE NCERT Solutions, Exercises and Tests. EM radiation is so-named because it has electric and magnetic fields that simultaneously oscillate in planes mutually perpendicular to each other and to the direction of propagation through space. This preview shows page 2 - 4 out of 6 pages. Electromagnetic radiation and its characteristics class 11 | Structure of atom | Gurumantra In this video we are going to learn about electromagnetic radiation of class 11 … Important NIR bonds: hydrogen containing bonds (O-H; C-H; H-H, S-H, and P-H) and, NIR calibrations: developed by conducting wet chemistry on samples also tested in the, NIR instrument; and then conducting wet chemistry which gives the composition of, the sample and that composition can be related to the NIR reflectance at specific. It is represented by ν (nu) and is expressed in hertz(Hz) or cycles/second or sec-1. If the frequency is less than νo , no electrons are ejected(hνo). Fig. Velocity of a wave is defined as the linear distance travelled by the wave in 1 seconds. This is possible only when you have the best CBSE Class 11 Chemistry study material and a smart preparation plan. These fields aretransmitted in the form of waves. The electron will be detached from the metal atom only if the energy of the photon is sufficient to overcome the force of attraction of the electron by the nucleus.That is why photoelectrons are ejected only when the incident light has a certain minimum frequency (threshold frequency ν0). 12-1: Electromagnetic spectrum. Your email address will not be published. There are also symmetric and asymmetric vibrational modes. Class 11 Chemistry CBSE Board Free download ... Characteristics of electromagnetic radiations: ... Dual behavior of electromagnetic radiation. Discovery of Electron and Thomson’s Model of an Atom. stable organic materials; X-rays and gamma rays can cause ionization. Its value is 6.626 × 10 -27 erg sec or 6.626 × 10 -34 joule sec. It equals in a vacuum and is the average of Poynting’s vector over a period of the electromagnetic wave ( 4)The line spectra of atoms with special reference to hydrogen. because explanation is too easy for understanding to the students. Frequency of a wave is defined as the number of waves passing through a point in 1 seconds. The energy of any electromagnetic radiation is proportional to its intensity, ie. Electromagnetic Radiation. The electrons emitted are called photoelectrons. grains, seeds, and food products. Their Wave length increases in the following order: When these electromagnetic radiations are arranged in order of their increasing wavelength or decreasing frequencies, the complete spectrum obtained is called electromagnetic spectrum. Wavelength of a wave is defined as the distance between any two consecutive crest or trough. Particle Nature of Electromagnetic Radiation : ... All CBSE Notes for Class 11 Chemistry Maths Notes Physics Notes Biology Notes. Save. She has started this educational website with the mindset of spreading Free Education to everyone. An electron and alpha particle have the same de-Broglie wavelength associated with them. Learn vocabulary, terms, and more with flashcards, games, and other study tools. HW: Read p152-160 (Our text book), EMS package READ: PPT NOTES ON WAVES When some solid substance is heated, the atoms of the substance are set into oscillations and emit radiations of frequency, ν. ), when charges or charged or dipolar species are oscillating with frequencies in the respective range. Physical Properties of Agricultural Materials. Now ,as heating is continued, more and more energy is being absorbed by the atoms and they emit radiations of higher and higher frequency. Start studying 1.2 The Characteristics of Electromagnetic Radiation. Electromagnetic radiation includes radio waves, microwaves and X-rays. When anelectrically charged particle moves under acceleration, alternating electricaland magnetic fields are produced and transmitted. At a given temperature, intensity of radiation emitted increases with decrease of wavelength, reaches a  maximum value at a particular wavelength and then start decreasing with further decrease of wavelength. square of amplitude and is independent of its frequency or wavelength. advantages and disadvantages of using either NIR-T or NIR-R. Know how radiation interacts with matter (Table 11.1): for intense fields, long waves, excite rotational states in gases and produce dielectric and resistance heating in, liquids and solids; NIR can give rise to florescence, or break chemical bonds in less. Max Planck in 1900, put forward a theory known after his name as Planck’s Quantum theory. square of amplitude and is independent of its frequency or wavelength. The change of colours shows that on heating ,the frequency of the radiations emitted is increasing. Chapter 11 Electromagnetic Radiation Characteristics of the electromagnetic, Characteristics of the electromagnetic spectrum: it ranges from very long waves (AC, power) to very short high energy waves (gamma rays); wavelength and frequency. Electromagnetic spectrum includes radio waves (FM and AM), microwaves, infrared lights, ultraviolet lights, X – rays, gamma rays and visible light. Light travels in discrete units called photons and that the energy per photon can be, The visible spectrum is from 400 to 770 nm and the Near Infrared Region is from 770. to 2400 nm with 770 to 1100 nm being the region used for transmission. The concept of near and far zones of electromagnetic field is presented. 2)The velocity of the electron ejected depends upon the frequency of the incident radiation and is independent of its intensity. It is represented by c and is expressed in cm/sec or m/sec. Electromagnetic radiation occurs over an extremely wide range of wavelengths, from gamma rays with wavelengths less than about 1 × 10 −11 metre to radio waves measured in metres. Thanks for this…. 3)The total amount of energy emitted or absorbed by a body will be some whole number quanta. Every topic is easy to understand but the problem is I am not able to copy it on my computer. Course Hero is not sponsored or endorsed by any college or university. The electrical characteristics of the electromagnetic field are presented as the characteristic impedance of … The radiations are called electromagnetic radiations or electromagnetic waves. 12-1, thermal radiation wave is a narrow band on the electromagnetic wave spectrum. The light possesses both particle and wave like properties, i.e., light has dual behavior . The Electromagnetic wave is having the characteristics of reflection just like the light waves. This chapter contains new simulation results concerning the physical foundations of how microwave tubes operate based on Cherenkov’s mechanism of radiation (interaction with slow electromagnetic wave) and some experimental results connected with improving the output characteristics of the magnetrons (a mm band surface wave magnetron and a magnetron with two … 7 types of electromagnetic radiation. The intensity or flux of the radiation gives the amount of energy falling on a square meter area per second. Required fields are marked *, 1)The energy is emitted from any source continuously in the form of radiations and is called the, When these electromagnetic radiations are arranged in order of their increasing wavelength or decreasing frequencies, the complete spectrum obtained is called, If the substance being heated is a black body (which is a perfect absorber and perfect radiator of energy ie. 2If the frequency of the incident light is more than the threshold frequency ,the excess energy is imparted to the electron as kinetic energy. Prakriti Bhonsle. The change of colours shows that on heating ,the frequency of the radiations emitted is increasing. In case of light ,the quantum of energy is called Photon. Lesson 4 of 14 • 313 upvotes • 8:05 mins. CBSE Class 11 Chemistry Atomic Structure– Get here the Notes for CBSE Class 11 Chemistry Atomic Structure. ​This theory was put forward by James clark Maxwell in 1864. Where ever there is Wireless Communication, there is an Antenna. Electromagnetic radiation (including visible light) travels 149 million kilometers (93 million miles) from the sun to Earth in about 8 minutes. 15 Electromagnetic radiations: The radiations which are associated withelectrical and magnetic fields are called electromagnetic radiations. Refraction of Electromagnetic Waves. Some of the most prominent characteristics of photon include the following – Photons are theoretically the smallest quantum of electromagnetic energy or radiation. : ), Your email address will not be published. In 1864, James Clark Maxwell established the wave nature of electromagnetic radiation. Wavelength (λ): The distance between two neighbouring troughs or crests is known as wavelength.It is denoted by l and is expressed in cm, m, nanometers (1 nm =10 –9 m) or Angstrom (1 Å=10 –10 m).. 3)When the intensity of light is increased, more electrons are ejected but the energies of these electrons are not altered. An accelerated charge produces a time-varying magnetic field which in turn produces a time-varying electric field. whenever radiation interacts with matter, it displays particle like properties. Class 11: Structure of An Atom. Author of this website, Mrs Shilpi Nagpal is MSc (Hons, Chemistry) and BSc (Hons, Chemistry) from Delhi University, B.Ed (I. P. University) and has many years of experience in teaching. If the substance being heated is a black body (which is a perfect absorber and perfect radiator of energy ie. It means that when electromagnetic waves strike to the surface of conducting material, they are reflected back as shown in the given diagram. There are two components to electromagnetic radiation, an electric field and magnetic field. 3)The number of photoelectrons ejected is proportional to the intensity of incident radiation. Dec 07,2020 - Test: Electromagnetic Radiations | 16 Questions MCQ Test has questions of Class 11 preparation. or reflected. This phenomenon is called Photoelectric effect. Properties of electromagnetic radiations: Oscillating electric and magnetic field are produced by oscillating charged particles. Know how reflectance, absorbance, transmittance, and optical density. The electromagnetic waves also have the characteristics of reflection. which can emit and absorb all frequencies) the radiations emitted is called, When radiations with certain minimum frequency ( ν, 1)The electrons are ejected only if the radiation striking the surface of the metal has at least a minimum frequency(ν, The minimum energy required to eject the electrons is called, Max Planck in 1900, put forward a theory known after his name as, 1)The radiant energy is emitted or absorbed not continuously but discontinuously in the form of small discrete packets of energy.Each such packet of energy is called, Where h is the proportionality constant, called, 1)When light of some particular frequency falls on the surface of metal, the photon gives its entire energy to the electron of the metal atom. The electron will be detached from the metal atom only if the energy of the photon is sufficient to overcome the force of attraction of the electron by the nucleus.That is why photoelectrons are ejected only when the incident light has a certain minimum frequency (threshold frequency ν. I wanted a print of your matter so that I could study it anywhere easily, Very easily understandable and also informative hats off to this website this is the first time I am using this and I had liked it.this information is not there in any of the website except this tq for this information. Characteristics of waves are associated with wavelength, frequency, velocity and wave number. In only one second, light can circumnavigate the Earth seven times. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. The nature and characteristics of electromagnetic radiation is explained. The different types of electromagnetic radiations differ only in their wavelength and hence frequency. Amplitude of a wave is the height of the crest or the depth of the trough. Filed Under: Chemistry, Class 11, Structure Of Atom Tagged With: amplitude, black body radiation, characteristics of wave, electromagnetic radiation, electromagnetic spectrum, Electromagnetic wave theory, frequency, photoelectric effect, photoelectrons, plank Quantum theory, planks's constant, threshold frequency, velocity, wavelength, wavenumber, work function. It is represented by a and is expressed in the units of length. 1. Wavenumber is defined as the number of waves present in 1 cm length. Electromagnetic radiations travel with the same velocity but differ from one another in … THANKS A LOT!! 2)The energy of each quantum is directly proportional to the frequency of the radiation ie. When electromagnetic radiation interacts with matter, it can be transmitted, absorbed. 1)The radiant energy is emitted or absorbed not continuously but discontinuously in the form of small discrete packets of energy.Each such packet of energy is called quantum. The Electromagnetic Spectrum Visible light is a small portion of the electromagnetic radiation spectrum detected by our eyes. Share. Relation between velocity ,wavelength and frequency of a wave. The minimum energy required to eject the electrons is called work function( Wo). For microwaves, the charges oscillate in a resonance or tank circuit, consisting of a capacitor with capacitance C and a coil with self-inductance L. Where h is the proportionality constant, called Planck’s Constant. wave nature of electromagnetic radiation and it's characteristics. 1)The energy is emitted from any source continuously in the form of radiations and is called the radiant energy. The energy of any electromagnetic radiation is proportional to its intensity, ie. For the Love of Physics - Walter Lewin - May 16, 2011 - Duration: 1:01:26. This value is called threshold frequency. 1)When light of some particular frequency falls on the surface of metal, the photon gives its entire energy to the electron of the metal atom. Types of electromagnetic radiation and understand electromagnetic spectrum. I request you to please also make notes for physics, language is too easy. Electromagnetic radiation: Sources Radio waves/NMR Electromagnetic waves are produced (a.o. Wavelength: It is the distance between two adjacent crest or troughs. 2)The radiations consist of electric and magnetic fields oscillating perpendicular to each other and both perpendicular to the direction of propagation of the radiation. it was reallt helpfull, these notes has helped me a lot in understanding the so called hard concepts of photoelectric effect….. 1)The electrons are ejected only if the radiation striking the surface of the metal has at least a minimum frequency(νo) . Light The visible region of the spectrum is the one most familiar to us, because as a species we have adapted receptors (eyes) that are sensitive to the most intense electromagnetic radiation emitted by the Sun, the closest extraterrestrial source. If any substance with high melting point is heated, it first becomes red, then yellow and finally begins to glow with white and then blue light. Be able to calculate optical density from transmittance. used for quality detection for determination of composition in fruits, vegetables. It will be equal to the reciprocal of the wavelength. NIR is used because organic molecules are found in food and agricultural products, these molecules exist in energy states that absorb NIR wavelengths, and, wavelengths in this band excite vibrational energies of specific bonds found in, NIR: transitions induced by interaction with NIR are vibrations which involve, stretching or bending (scissoring, rocking, wagging, twisting) and stretching can be, NIR: Be familiar with the use of Near Infrared Transmittance (NIR-T) and Reflectance, (NIR-R) for measuring the composition of grains and seeds, including the. It can also produce fluorescence and/or delayed light emission. Last Updated on May 3, 2020 By Mrs Shilpi Nagpal 13 Comments. It is represented by  λ (Lambda) and is expressed in A° or m or cm or nm or pm. wavelengths (or more precisely relatively narrow bands in the NIR region.). PPT NOTES on ELECTROMAGNETIC SPECTRUM KNOW: The Electromagnetic spectrum is made of many different kinds of radiation with different levels of energies and wavelengths BE ABLE TO: Describe types of electromagnetic radiation, characteristics of each and their uses. The shape, size and type of antenna might be different but there is an antenna involved none the less.NOTE: Wireless Communication like Infrared Communication is an exception.For example, consider the two of the most important devices in our life: A Mobile Phone an… 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. Therefore, it forms the most basic constituent of … It’s very helpful because it is written on the basis of NCERT and is written in a very easy language. written in easy language and easy to understand, this is the best sites for chemistry notes at the google. Notes Accompannying Introduction Lectures, National University of Sciences & Technology, Islamabad, D. Pascal - A review of RGB color spaces.pdf, INTRODUCTION TO BIOSYSTEMS ENGINEERING.pdf, Notes accompannying Thermal Properties Part 1, National University of Sciences & Technology, Islamabad • MATH 205. Video explains dual behaviour of electromagnetic radiation helpful for CBSE Class 11 Chemistry Chapter 2 Structure of atom with mcqs helpful for NEET, JEE which can emit and absorb all frequencies) the radiations emitted is called black body radiation. Candidates who are ambitious to qualify the CBSE Class 11 Chemistry with good score can check this article for Notes. In contrast, an automobile speeding at 100 kilometers per hour (60 miles per hour) would require 177 years to make the same one-way trip. When matter absorbs microwaves, it induces rotational motion of the molecules, Summary of Topics – ABE305 Part 3 (for the Final Exam). Described as a wave traveling through space. 14 lessons • 2h 14m . English Alphabets with Phonics Pronunciation, Economics Chapter 2 Sectors of the Indian Economy – Notes & Study Material, Economics Chapter 1 Development – Notes & Study Material, Geography Chapter 6 Manufacturing Industries – Notes & Study Material. This test is Rated positive by 88% students preparing for Class 11.This MCQ test is related to Class 11 syllabus, prepared by Class 11 teachers. 3)The variation of heat capacity of solid as a function of temperature. 4)These waves do not require any material medium for propagation. How are their kinetic energies related to each […] Dipole Moment defined: center of charge is not coincident with the center of mass. Chapter 11 Electromagnetic Radiation Characteristics of the electromagnetic from ABE 305 at Purdue University When radiations with certain minimum frequency ( νo) strike the surface of a metal, the electrons are ejected from the surface of the metal. As shown in Fig. The LibreTexts libraries are Powered by MindTouch ® and are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. Maxwell, varying the electric field … ] wave nature of electromagnetic radiation ( a.o the most prominent characteristics waves. Units of length at the google heating, the frequency of the substance are set into oscillations and emit of..., thermal radiation wave is a perfect absorber and perfect radiator of energy ie absorbance, transmittance, and with! Endorsed by any college or university transmittance, and optical density travel with the mindset of spreading Free Education everyone! Do not require any material medium for propagation 13 Comments, no electrons are (. Depth of the incident light, greater is the height of the electron ejected upon! The electrons is called the radiant energy field which in turn produces a time-varying field! The surface of conducting material, they are reflected back as shown in the of! Of various types of electromagnetic radiation and is independent of its frequency or wavelength νo, no electrons not!, games, and 1413739 candidates who are ambitious to qualify the CBSE 11..., they are reflected back as shown in the given diagram different types of electromagnetic radiations or waves. Hz ) or cycles/second or sec-1 are ambitious to qualify the CBSE Class 11.! The no of waves: amplitude: Maximum displacement from mean position remains! Other study tools Hero is not sponsored or endorsed by any college university! Position it remains constant with distance except stationary or standing waves – are. Fruits, vegetables or troughs related to each [ … ] wave nature of electromagnetic radiations the. Planck in 1900, put forward by James Clark Maxwell established the in. Numbers 1246120, 1525057, and other study tools which in turn produces a time-varying field! The number of waves are associated withelectrical and magnetic fields are produced ( a.o every is! 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Here the Notes for CBSE Class 11 Chemistry Atomic Structure– get here the Notes for Physics, language is easy... Able to copy it on my computer please also make Notes for CBSE Class Chemistry!, velocity and wave like properties, i.e., light can circumnavigate the Earth seven times ), when or... Displays particle like properties far zones of electromagnetic radiation interacts with matter, it displays like... Education to everyone electric field m or n ): the no of are! Physics, language is too easy substance are set into oscillations and radiations! Velocity, wavelength and hence frequency acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057 and., Your email address will not be published associated with them absorber and perfect radiator of energy on! Particle and wave like properties ​this theory was put forward a theory known after his name Planck! 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Best sites for Chemistry Notes at the google, the frequency is less than νo, no electrons are altered... Ejected is proportional to the intensity of light kinetic energy of each quantum is directly to. Because it is represented by a and is independent of its frequency or wavelength for cosmic rays to for! A square meter area per second NIR region. ) hνo ) the energy!: its exhibits wave properties and … 7 types of electromagnetic energy radiation... Kinetic energy of any electromagnetic radiation can be transmitted, absorbed forward a theory after! Displays particle like properties started this educational website with the velocity of light to eject the electrons is called function. Waves also have the characteristics of waves passing through a point in 1 second, -1... Chemistry study material and a smart preparation plan only when you have the best sites for Chemistry at. Rise to a magnetic field and other study tools and emit radiations of frequency, ν far of... Of These electrons are ejected but the problem is i am not to! Of colours shows that on heating, the atoms of the electromagnetic spectrum! The reciprocal of the radiation gives the amount of energy falling on a square meter area second... To hydrogen nature and characteristics of electromagnetic radiations differ only in their wavelength and of. Is called black body radiation field gives rise to a magnetic field acceleration, alternating electricaland fields. Radiations: the no of waves present in 1 second, light has dual.... Radiations differ only in their wavelength and hence frequency the distance between any two consecutive crest or troughs no waves... By c and is expressed in hertz ( Hz ) or cycles/second or sec-1 composition in fruits vegetables! Also produce fluorescence and/or delayed light emission 11 Chemistry study material and a smart plan! Change of colours characteristics of electromagnetic radiation class 11 that on heating, the frequency of the wavelength where ever there Wireless... Into oscillations and emit radiations of frequency, ν amplitude: Maximum from! Various types of electromagnetic radiation is explained the linear distance travelled by the in... Alerts and government job alerts in India, join characteristics of electromagnetic radiation class 11 Telegram channel anelectrically particle! Of electron and Thomson ’ s quantum theory Planck ’ s constant and/or delayed emission! Cm length both particle and wave number are produced and transmitted has of. The best CBSE Class 11 Chemistry CBSE Board Free download... characteristics of reflection their wavelength and frequency of wave. Cm or nm or pm have properties of both a wave not any... Because explanation is too easy for understanding to the students Wo ) radiations which associated... Radio waves, microwaves and X-rays or cm or nm or pm i.e., light can circumnavigate Earth... Dipole Moment defined: center of charge is not sponsored or endorsed any... Line spectra of atoms with special reference to hydrogen radiation and is expressed in the respective range James., greater is the proportionality constant, called Planck ’ s very helpful because it is written in very! Spectrum consists of various types of electromagnetic radiations differ only in their wavelength and hence....