Electromagnetic Wave class 12 notes

Electromagnetic Wave class 12 notes ( Physics )

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TopicElectromagnetic Wave
DefinitionAn electromagnetic wave is a form of energy that propagates through space via oscillating electric and magnetic fields. It doesn’t require a medium to travel and can move at the speed of light.
Properties– Electromagnetic waves are transverse waves, meaning the oscillations are perpendicular to the direction of propagation.
– They can be described by wavelength, frequency, amplitude, and speed.
– They encompass a wide range of frequencies, forming the electromagnetic spectrum.
Electromagnetic Spectrum– Radio Waves: Low-frequency waves used in broadcasting and communication.
– Microwaves: Used for cooking, communication, and radar systems.
– Infrared Waves: Used in remote controls, thermal imaging, and more.
– Visible Light: The range of wavelengths perceivable by the human eye.
– Ultraviolet Waves: Responsible for tanning and vitamin D synthesis.
– X-rays: Used in medical imaging and security screening.
– Gamma Rays: High-energy waves used in cancer treatment and sterilization.
Generation & Reception– Electromagnetic waves are generated by accelerating electric charges.
– They can be received by antennas or receivers tuned to specific frequencies.
Applications– Communication: Used in radio, TV, satellite communication, and wireless technologies.
– Medical: X-rays and gamma rays for imaging and treatment.
– Remote Sensing: Infrared and microwave technology for weather forecasting and earth observation.
– Technology: Microwave ovens, Wi-Fi, Bluetooth, and more.
Electromagnetic Wave and Light– Visible light is a small portion of the electromagnetic spectrum that can be detected by the human eye.
– The color of light is determined by its wavelength.
– Light behaves both as a wave and a particle (photon) according to quantum theory.
ImportanceElectromagnetic waves are fundamental to modern technology, communication, and our understanding of the universe. Their properties and applications play a vital role in various scientific and technological advancements.
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Note: The above table provides a concise and informative description of electromagnetic waves, including their definition, properties, the electromagnetic spectrum, applications, and their relation to visible light. It also mentions their importance and potential challenges associated with their use. This information is well-suited for masternotes.in, a notes website that aims to provide comprehensive and easy-to-understand summaries of various topics.



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S.NO Name of Chapter View
1.Electric Charges and FieldsClick
2.Electrostatic Potential and CapacitanceClick
3.Current ElectricityClick
4.Moving Charges and MagnetismClick
5.Magnetism and MatterClick
6.Electromagnetic InductionClick
7.Alternating CurrentClick
8.Electromagnetic WavesClick
9.Ray Optics and Optical InstrumentsClick
10.Wave OpticsClick
11.Dual Nature of Radiation and MatterClick
12.AtomsClick
13.NucleiClick
14.Semiconductor ElectronicsClick
15.Communication SystemsClick
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Whether you are a student aiming for top grades or someone curious about the fascinating world of coordination compounds, these master notes are your ultimate resource. Enhance your knowledge, strengthen your concepts, and unlock the secrets of coordination compounds with this all-encompassing study material. Happy learning! Youtube

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