Heat Transfer: Conduction, Convection And Radiation | Physics

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Board exams will be hard or easy

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Very tough

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[@jawadammaryassersaadzaghlo4085]

The video is excellent and I was studying for the science exam and I was confused between conduction, convection, and radiation. Thank you so much for making this video sir.

[@kehav1607]

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[@alvinsupan]

Thank you sir 😁 god bless 🙏

[@ritikamuthu6400]

Thank you so much sir .. I have a lot of doubts about transfer of heat .. now I clearly understand what is transfer of heat ... Thank you so much sir

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Thanks now I can give the test with no doubts

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love the way you explain it. Thanks

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[@kartheebanmuthuswamy3100]

very useful... thanks!

[@selvarajvijayan6681]

Conduction ex: take some hot water in any utensils 🥄 and put a silver spoon 🥄 in it and leave the spoon inside the water for some time. it’s work i tried

[@bebetgr5361]

thank you for helping

[@NAJAMACADEMY]

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[@studymathmaticswithrajeshs3989]

Thanks sir for this concept.I am from class7 ,I have no doubt now in Radiation of heat. Thanks very much sir😎😎🙏🙏🙏🙏🙏🙏

[@gayitricompany5646]

Sir can you tell me why heat transfer to one to another object as there is thermal equilibrum also?

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[@tasleemabegum931]

Thank you sir this is very useful for me

[@bonthudevadasu2944]

Sir from sun no medium but my body is heat ok ...but from 🔥 fire my body also heat ther is also no medium..how this is called convection...??? please give me answer I have feel both same pls difference tell us

[@NAJAMACADEMY]

Well, the Sunlight travels in th form of electromagnetic waves. Electromagnetic waves require no medium, because they are made out of oscillations of electric and magnetic field fields. Energy transfer from electric to magnetic field and then from magnetic field to electric field. By this process, energy travels from one place to another through electromagnetic waves or EM waves. While in convection process, air molecules absorb energy from the flames or candle; they (molecules) become less denser and raise up. When these molecules come in contact with your body, you feel the hotness... I hope you will understand it. Thanks 🙏🙏🙏🙏

[@bonthudevadasu2944]

@@NAJAMACADEMY I love physics but from physics to me no medium sir you are the best medium ...I love you sir... thank so much... sir I don't know how to speak in English...if any mistakes khaminchandi...

[@FunnyVedios-k9e]

Heat don't need medium

[@armandoorillano7672]

There are mediums in convection...the air particles in gas and liquid...it absorbed heat then contacts in your body and you feel the heat...

[@aiiep6]

@@FunnyVedios-k9e just in radiation ..

[@anushkajaiswal7790]

Sir in convection here the water is kept above the flame sir the heat from flame to utensil transferred by conduction or the convection only

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WHY TF DID MY TEACHER NOT SAY A THING ABOUT THERMAL EQUILIBRIUM??? ITS IN ALL PAST PAPER QUESTIONS.....THANK YOU SIR

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The only thing i dont understand is the deegree °C and °F😔 But thank you for this ved thank you very much sirr:)

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c is celsius and f is farhenhit

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Brilliant explanation sir

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Keep up your great efforts

[@fireflymiesumae]

Please do a video on combustion

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IT WAS REALLY HELP FULL THANK U

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Thanks

[@seekoiftikharsay1441]

Air is a medium between Hand and Flame Candle in case of Convection?

[@salaarsayed9579]

sir u r very helpful in understanding difficult concept. my school teacher however, is much hotter than you because of convection. me and my frands fond this video vary hepful

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Sir sir how would you make this all pictures and make these types of videos with the hand which is trying on the video how would you make by which app can you tell us please

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[@aimanahmad5924]

Heat energy transfer from human body to surrounding IS EXAMPLE OF RADIATION but it can be of Convection Am I right ?? Plzz make me understand I have confusion between these two Now heat from heater during winter is example of radiation ,how?? Plzz make me understand It can be of Convection???

[@NAJAMACADEMY]

Good questions... 👏👏👏👏 Well, Heat can also transfer from a human body by convection. For example, if you enter to a cold room, the air particles will absorb heat from your hot body and will rise up... Secondly, during exhalation the gaseous particles of carbon dioxide absorb heat from your body, and it comes out. Although, it is due to difference in atmospheric pressure that you inhale and exhale, but carbon dioxide molecules absorb heat from the respiratory track and comes out... 2) When you switch on the heater during winter, the surrounding air molecules come in contact with the hot heater and heat transfer from hot heater to the cold molecules of air. As a result, they get lightness and rise up... This is an example of convection. Secondly, when you keep some cooking pot on a heater, the particles of the cooking pot absorb heat from the heater, this an example of heat transfer by conduction. I hope it will clear your confusion... 😊😊😊😊😊

[@aimanahmad5924]

@@NAJAMACADEMY Sir ,what I want to ask that in book NCERT (India) I have read that HEAT FROM BODY to surrounding is EXAMPLE of RADIATION secondly heat from heater during winter season is an example of Radiation WE know NCERT Book is authentic ,All Indians read it and it is written by Scholars So plzz how they say IT IS RADIATION and hence same process of convention done in above two examples Plzz assist As convection and radiation have lots of confusions?? Where convection ,where radiation??

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[@physicsloverjoinmychannel2937]

By what method u relate absolute zero and radiation??? Pls answer it

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Yes

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Wow.

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At 3:52 second you spelled between wrong but other than that keep up the great work

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sir pls talk in ur normal accent ,its kinda weird to hear u,other wise u teach great!

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Yea

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Light objects also and light colour clothes

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Helpful

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[@jellybean3078]

Can u give some other examples of radiation?

[@slizyytontop]

thank u