LED in Hindi | Light Emitting Diode

  • Published on Feb 7, 2017
  • Hole is Valance Band Phenomenon ..it doesn't go to conduction ...sorry for the mistake. Hole only moves in the valance band.
    A light-emitting diode (LED) is a two-lead semiconductor light source. It is a p-n junction diode, which emits light when activated.When a suitable voltage is applied to the leads, electrons are able to recombine with electron holes within the device, releasing energy in the form of photons. This effect is called electroluminescence, and the color of the light (corresponding to the energy of the photon) is determined by the energy band gap of the semiconductor.
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Comments • 165

  • Anju Bind
    Anju Bind 13 days ago

    LCD ke bare me bhi

  • subhasish das
    subhasish das 19 days ago

    Is led operate at reverse bias?

  • Lawless Nation
    Lawless Nation Month ago

    Awesome lecture
    Thanks from Bangladesh

  • Kajal Vats
    Kajal Vats Month ago

    Led ko reverse biased ni kiya jata sir forward biased kiya jata h

  • Subhadeep Chatterjee
    Subhadeep Chatterjee 2 months ago


  • Amit kumar
    Amit kumar 2 months ago

    Can you glow led diode bulbs 10 20 30 50 make video

  • Arjun Yadav
    Arjun Yadav 4 months ago +1

    So good

  • mick maze
    mick maze 4 months ago

    Sir holes toh fix Rehte h na wo move kaise kr skte h

  • Rakesh Yogi
    Rakesh Yogi 5 months ago

    Gajab samjaya

  • Nisha Pandit
    Nisha Pandit 6 months ago

    Sir you are too good

  • Satyam Prajapati
    Satyam Prajapati 7 months ago

    Photo clear nhi aa rhi hai

  • Bottu Divya07
    Bottu Divya07 7 months ago

    Plz say in English

  • Rekha Goyal
    Rekha Goyal 7 months ago

    Good sir ji

  • Akash kumar
    Akash kumar 7 months ago

    8mm Led 50led ka lod kitna hoga

  • Ankur Tikait
    Ankur Tikait 7 months ago

    Why not indigo in visible light?

  • Akash PQ
    Akash PQ 8 months ago

    Which camera are you using?

  • Rohit Raghuwanshi
    Rohit Raghuwanshi 8 months ago

    Good work

  • Shuvasish Roy Shuvo
    Shuvasish Roy Shuvo 8 months ago

    Thanks for the great explanation ❤

  • Anand Prakash Mishra
    Anand Prakash Mishra 8 months ago

    Bahut badhiya

  • Shopholic Bazar
    Shopholic Bazar 8 months ago


  • Nitu Sathyarthi
    Nitu Sathyarthi 8 months ago

    bhaiya kya bat h "good job " bhot ache se samjh aya

  • Samad4 You
    Samad4 You 8 months ago +1

    Thank you sir tomorrow is my physics practical and my project is LED so thanks for giving me information about thiss....

  • Dinesh Singh
    Dinesh Singh 8 months ago +1

    Thank God I find your channel... Best explanation on led

    CHARU YADAV 8 months ago

    Sir aapne bhut achha btaya

  • Ravikant Turi
    Ravikant Turi 8 months ago

    please use colours pen

  • Zohara Khan
    Zohara Khan 9 months ago

    Holes can’t move electrons move

  • Sobia jutt
    Sobia jutt 9 months ago +1

    Thank uuu so much sir!! Fantastic LEC 👍👌👌👌👍👌👌👏👏👏👏👏👏:::....Allah bless you always!!!

  • Khushi Garg
    Khushi Garg 9 months ago

    Waah sir..... Kya baat hai.... Apne toh ye ch mere liye easy kar diya!!!

  • Aahana Sah
    Aahana Sah 9 months ago +1

    Sir please baki ka chapters ka vi vedios banaya aapka vedio time kafhi short ha or aacha sa samaj ma vi aata ha sir 5 March ko physics ka exam ha usa pahal kuch or chapters ka vedio banaya please request ha

  • IT solution
    IT solution 9 months ago

    Nice video welldone

  • Yashpal singh
    Yashpal singh 9 months ago

    Current hogi

  • Yashpal singh
    Yashpal singh 9 months ago


  • Rohit Sharma
    Rohit Sharma 9 months ago

    Bhai hole move to krte hi nhi

  • ritik malik
    ritik malik 10 months ago

    Yeh pen kitne ka liya

  • Ravi Doshiyar
    Ravi Doshiyar 10 months ago

    Bhai Thanks

  • Anmol Deep
    Anmol Deep 10 months ago

    Thank u

  • Ajab Khan
    Ajab Khan 10 months ago

    Dear agar intensity berhanay se current barhay ga tu according to law current is directly prportional to intensity hoga...aap ne intensity is directly proportional to current likha/bola hay...

  • Rupesh Nakawe
    Rupesh Nakawe 10 months ago +1


  • Sonu Kumar
    Sonu Kumar 10 months ago

    Very fantastic teaching sir
    Supperrr sir

  • Saira Banu
    Saira Banu 10 months ago


  • Anand Keshri
    Anand Keshri 10 months ago

    Very nyc explanation..

  • Ozaif Khan
    Ozaif Khan 10 months ago

    Sir make all video of physics class 12

  • madhusudan Gautam
    madhusudan Gautam 11 months ago

    Bhai tuje pta bhi h ki hole Ka matlab kya h Yha

  • aditya taralekar
    aditya taralekar 11 months ago +1

    bhai thank u so much
    ur simplicity is so good

  • Mohit Sanap
    Mohit Sanap 11 months ago

    Bahot ad aate hai distrub hota hai

  • Maneesh Vishwakarma
    Maneesh Vishwakarma 11 months ago

    Nice video bhai

  • Hema Saini
    Hema Saini 11 months ago

    Your teaching is interesting

  • nisha arora
    nisha arora 11 months ago +3

    Thnks alot for such an awesome lecture

  • Atul Singh
    Atul Singh 11 months ago

    Best explanation for schrodingers equation in 5 minutes, u must watch for exam preparation.

  • Zain Hamid
    Zain Hamid 11 months ago

    All pointss that u required.... Well done 💯👍

  • Mukul Frinda
    Mukul Frinda 11 months ago


    MINAKSHI GOSWAMI 11 months ago

    Nice video but sir video clear dikh nahi raha h

  • Mohd Adil
    Mohd Adil Year ago

    Good Sir

  • Ketan Prajapati
    Ketan Prajapati Year ago

    nice explanation 👍

  • hemen chamuah
    hemen chamuah Year ago

    Sir why LED cannt work in reverse bias mode. Plzzz rply sir...

  • ajeet Kumar
    ajeet Kumar Year ago +1

    Led को 2.5 वोल्ट से ज्यादा देने पर हीट होकर जंक्शन नष्ट हो जाएगा 5 वोल्ट हम led को नही देते । प्रोटेक्शन मैं series मैं resistance लगा देते है

  • ajeet Kumar
    ajeet Kumar Year ago

    इलेक्ट्रान and कोटर एक दूसरे से recombinat ion कर के जो loss होता है energy वो लाइट के रूप मे बाहर आती है

  • ajeet Kumar
    ajeet Kumar Year ago +1

    बेवकूफ पता नही तो गलत मत बताओ


    Very well done .. keep doing more videos ..thankyou

  • MOhammad Asif
    MOhammad Asif Year ago