Electromagnetic Spectrum || for Class 12 in Hindi
In this Physics video in Hindi for Class 12 we explained what electromagnetic spectrum is and what are the different radiations are associated with it. We also explained the different ways of the production of electromagnetic waves and their usage. This topic is from Chapter 8 : 'Electromagnetic Waves' for Class 12 from NCERT.
The classification of electromagnetic waves according to frequency/wavelength is known as the electromagnetic spectrum.
But, there is no sharp division between one kind of wave and the next. The classification is based roughly on how the waves are produced and/or detected.
Processes of production of electromagnetic waves :
1. Accelerated motion of charges in conducting wires
2. Special devices, such as, klystrons, magnetrons, Gunn diodes etc.
3. Hot bodies and molecules
4. Electrons moving to lower energy level
5. Metal bombarded with high energy electrons
6. Nuclear reaction
Radio Waves :
Source : Accelerated motion of charges in conducting wires.
Usage : used in radio and television communication systems.
Microwaves :
Source : Special devices (klystrons, magnetrons, Gunn diodes etc.)
Usage : Radar systems, Microwave ovens
Infrared :
Source : Hot bodies and molecules
Usage : TV remote controller, Wi-fi system. It maintains earth’s warmth
Visible light :
Source : Electron’s jump to lower energy level. Sun, lamps are common sources of visible light.
Ultraviolet :
Source : Electron’s jump to very lower energy level (inner shell). Sun, welding arcs, UV lamps, mercury vapour lamps are some common sources of ultraviolet radiation.
X-rays :
Source : Bombarding a metal target by high energy electrons.
Usage : X-ray photography (radiography), treatment of cancer.
Gamma rays :
Source : Nuclear reactions.
Usage : Destroy cancer cells.
👇👇👇👇👇👇👇👇👇 𝑷𝒍𝒂𝒚𝒍𝒊𝒔𝒕 👇👇👇👇👇👇👇👇👇
🔴 ELECTROMAGNETIC WAVES - FULL CHAPTER 🔴 Class 12 - Physics
• Physics 12th : Electro...
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Пікірлер: 55
Excellent.you are the true educator.i have never seen such presentation. 🙏
Salute to you🫡🫡🫡 This is important for Optics Study.❤❤❤
you are my one of the favorite teacher on youtube reason=>explain with perfect diagrams. respect from pakistan 🇵🇰
@carsattitude
Жыл бұрын
@कृण्वंतो_विश्वमार्यम्_🕉️ yeah nahi to book pr yeah topic han class 10th me.
@sparkyedit
6 ай бұрын
Tum Hindu ho?
sir u r great the best teacher may god bless u and give u great success
Amazing lecture 🙏🙏
Great explanation🙏🙏
Thank u so much sir❤
Sir my every lecture is very good on your channel thank you sir
Sir your teaching method is Very good
Great welcome sir
Amazing🙏
Great video session 👍👍👍
Sir your lessons and explanations are really genius. These are informative and helpful also .Sir if possible than can u make one video with full explanation of Stealth technology of aircraft please?! With warm regards ..your Follower Abid
great explanation
Wohh sir very nice lacture 😍
Sir plz upload what metter wave In quantum mechanics for bsc Is it only probability wave I think it is a probability for x for any exprent But why we say associated wave for a particle I think it is nothing but finding of X value for large times experiment and when we put the value in the graph page we see a weve pattern Is it right or wrong please upload video about it
Love you sir ji
🌟🌟 what is Quantum entanglement sir sir pls make a video on this 🙏
amazing lecture 👌🏻👌🏻 ... just a single doubt ... how is that infrared rays relevant with wi fi sytem as mentioned ... could you plzz explain that ?
Sir jaldi se agla vedios upload kr dijie🙏🏻🙏🏻🙏🏻☺️ Humare board exams aa rhe h I think 🤔🤔 helpful 😀😀🙂 hogi aapki vedios hamare liye
Please explain Rotational Dynamics Of BSc
Very nice explanation 👍
@edupoint.physics
Жыл бұрын
🙏
Plzzz make a video on 12th Chemistry coordination compounds
Amazing explanation sir, sir aap Acharya prashant ko jaante hai? Mujhe bataye aapki adhyatmik baate Acharya prashant se bohot milti hai.
Sir ji coulomb's law ke formula ke constant k=1/4π€ me 4π ka matalab smajha dijiye please
Thank you sir
@AnmolSharma-nq5tv
Жыл бұрын
Main aaj iss topic ke bare me soch hi raha Tha.
👍
❤
Physics teacher I know (12th ) Kshitij kanik pw Alakh sir Abhishek Sahu sir Radhika classes .......
Pizza sir Could you make videos on diffraction & interference as the present videos are too old
😮😮😮
Sir please Represent BSc Physics full Course
Maths aur chemistry k b videos banaye sir
Sir wave particle duality par ek video do na more explained
Sir I hv a doudht
I am reading see your video
Why moon doesn't fall on the earth...? How the moon or earth as well as sun gained so huge velocity.....?
Sir kya hum mathematically ye dikha sakte ki light ek transversal wave hai sir meri textbook ma hai but meri samajh na aa raha sir aap is par video bana dete to samj aa jata muje
@edupoint.physics
Жыл бұрын
Farman Beg, I have already answered that to you. Polarisation of light indicates that it is a transverse wave.
@farmanbeg9199
Жыл бұрын
@@edupoint.physics sir ye muje pata hai ma bol Raha tha ki Maxwell equation se kase show kar sakte hai sir meri textbook ma hai kas ma aap ko dikha sakta
gyan is directly proportional to less number in exam
@edupoint.physics
Жыл бұрын
Nope.... Not always...
Radar system ke upor vhi video dena🙏
@edupoint.physics
Жыл бұрын
Shall try....
First
Sir, why Aurora only appear in north and south pole only? Can you please make a video and explain the reason behind it, please sir 🙏.
@suhananasrin7625
Жыл бұрын
Study well chapter 4... aurora only appear only in Canada and other side of the world and this is because Canada and other.. present in North/south side..so therefore.. aurora only appear in those places.....🤞
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@edupoint.physics
Жыл бұрын
🙏
Ur confusion it's not traiangular it's semicircular
Class 12th k