Atoms Class 12 Physics | NCERT Chapter 12 | CBSE NEET JEE | One Shot 

It is my first time I saw a teacher who never gives a chance to create any doubt in my mind.... I really appreciate your teaching skill🙏............

i would drop my comment hope someone likes it IMP TOPICS 27:06 - RUTHERFORD MODELS 40:23 - Developments leading to Bohr model & Bohr's model of atom 42:56 - Line spectrum of hydrogen 53:23 - Bohr's model of hydrogen atom : postulates

Timestamps: 0:00 Introduction 0:40 Atom 1:53 History of Atom 3:22 Dalton’s Atomic Theory(1808) 4:22 Dalton’s Atomic Theory: Limitations 5:09 Atomic Models 5:47 Thomson Model of Atom 7:11 Introducing α, β and γ-rays 8:21 Rutherford’s Experiment 12:45 Rutherford’s Experiment: Conclusion 20:18 Rutherford’s model of Atom 22:09 Rutherford’s model of Atom: Electron orbits 27:14 Rutherford’s model of Atom: Limitations 29:22 Atomic spectra 32:10 Emission & Absorption Spectra 36:24 Continuous & Quantized Spectrum 39:41 Developments leading to Bohr model 40:31 Bohr’s Model of Atom 42:46 Line spectra of Hydrogen 53:02 Bohr Model of Hydrogen atom:Postulates 1:00:54 Bohr Radius 1:03:54 Total Energy of electron in Hydrogen atom 1:06:50 Bohr’s Model of Atom:Limitation 1:08:28 Heisenberg uncertainty principle 1:10:09 De-Broglie’s hypothesis: Wave-particle duality for matter 1:11:20 De-Broglie’s Explanation of Bohr’s postulate 1:13:44 Problem1 1:15:34 Problem2

1:03:36 there is a silent correction there. Ma'am actually forgot to put 'r' in that first orbital equation, although they corrected but it went unnoticed. So this is for those who were confused.

It's specially made for students who wants to complete full physics in exam gap like me 😄😄thanks mam 🙏🙏

I am preparing for neet and doing revision, Guys trust me she covered every point perfectly.

I was totally depended on your teachings for chemistry and physics through out my 12th and yesterday I gave my Physics and before that chemistry paper.... I gave an excellent performance more than my expections and that's only bcoz of you ma'am thanks a lot for making "SUCH VIDEOS FOR FREE "🥰🥰🥰❤️

This is the real one shot video...(with detailed explanation in less time)

i was Watching your lecture of dual nature of matter and was wishing that u'll upload lectures of atom and nuclie... and i am so happy to see this, thank u so much mam 💗✨

Chapter seems more interesting when you are studying just 5 hrs before exams 😂😂

2x wale iss line mei aa jaye 😂

1:01:31 v2 = ze2/ 4 pi Emr ... the r was missing. Later it was corrected at 1:03:40

At 1:03:37 correction is made by putting r in every step in eqn. For velocity

I must say your editing team is superb...means they just turned your lectures into an interesting subject .....Animation , background is just WOW.🥰

Thank you ma'am. Its a request plz upload 15th May - Semiconductors 16th May - Wave Optics 17th May - Electromagnetic waves 18th May - Nuclie 19th May - Full Term 2 Important Questions/TOPICS/PYQs revision of PHYSICS. Also if possible kindly upload TERM 2 biology and Maths remaining chapters videos that will help us

4th March 2024 valo attendance👍👍👍

Appreciating your and your team's great efforts that in so less time you are doing everything you can and every concept is just crystal clear 3 out of 7 chapters √√ Thank you so much ma'am

"Concept wise, this is where the concept lies", thanks for your efforts mam😊😊

Mam my father just respects you so much. He cant stop appreciating you and your team. It needs a lot of courage and needs a lot of hard work for creatinf long videos. Hats of to you mam. I thank god for giving us a teacher like you

👍👍👍👍👍 Thank you ma'am , Concept hua cristal clear .. Ma'am please upload a one shot of nuclei This is humble request from all student who are preparing for their exam through you videos..

This Lady is having a great hand in Nation Building 👍🏼

Ma'am please Sare chapters complete kra dena aap 🙏. I'm your very old student and always dependent on you. 💓 Congratulations🥳 for 2 millions. This is the best learning platform. Concept always crystal clear #freehaiparbesthai 💕

awesome lecture . your hardwork and effort behind this is showing in this video. thank you mam.❤🧡

Thank you so much ma'am. Specially for making vids on atom n dual nature. Pls do nuclei too!! Appreciate all ur hardwork ma'am you are angel.

56:37 heh.. mam ne ek baar mein hein kar dia, so basically E = hnu => h c/λ [nu = v] E = hc/λ E = 1/λ hc Eλ = hv λ = hc/E 1/λ = E/hC

Concept hua crystal clear 👍🏻👍🏻👍🏻 Thank you ma'am 🙏🏻👍🏻

Thank you for giving these wonderful videos 🤗🤗

The only lifeline we have - Roshni mam!

KCET TOPICS 0:00 Introduction 0:40 Atom 1:53 History of Atom 3:22 Dalton’s Atomic Theory(1808) 4:22 Dalton’s Atomic Theory: Limitations 5:09 Atomic Models 5:47 Thomson Model of Atom 8:21 Rutherford’s Experiment 12:45 Rutherford’s Experiment: Conclusion 20:18 Rutherford’s model of Atom 22:09 Rutherford’s model of Atom: Electron orbits 27:14 Rutherford’s model of Atom: Limitations 39:41 Developments leading to Bohr model 40:31 Bohr’s Model of Atom 42:46 Line spectra of Hydrogen 53:02 Bohr Model of Hydrogen atom:Postulates 1:00:54 Bohr Radius 1:03:54 Total Energy of electron in Hydrogen atom 1:06:50 Bohr’s Model of Atom:Limitation 1:08:28 Heisenberg uncertainty principle

Concept hua crystal clear 👍

Really I totally understand this video n actually my concept becomes crystal clear as roshni mam said ..

Who else got their boards in 5 days? ☠️

AT 1:03:37 CORRECTION IS MADE BY PUTTING r IN EVERY STEP IN EQUATION FOR VELOCITY....

Bs bhagwan pass krade🙏😭

Is this video is sufficient for class 12th batch 2022- 2023 please reply

It’s a request to record the other chapters also coz we are completely depend on u Ma’am 🥺🤧semiconductors wave optics nuclei we don’t need electromagnetic waves 🌊

Very nice lecture ma'am but i would like to suggest you TO USE BLACK BACKGROUND WHILE WRITING (ONLY) Because watching videos at night becomes very uncomfortable to eyes............. But the lecture is awesome ma'am. You are great ma'am

Ma’am, at 1:00:00 while solving the Bohr’s Radius you didn’t wrote the ‘r’ while finding ‘v’. You did add it in the last but students might get confused on where did the r go.

Thank you so much mam for making such valuable videos for free, you are really a superwomen for many students 🙏🙏

My all topics are Cristal clear because of you ma'am.🤗🤗 Thankyou so much ma'am 🙏🙏🤗

At 1:00:00 mathamatical discussion

Thank you ma'am 😊 your video helps us alot.. And from your teaching I learned many ❤️

1808 daltons atomic theory Limititation that atom is indivisible Thomsom plum pudding model Limitation distribution of charges in wrong mannerc

Who know that this is all copied from our scripture(rishi kannad ) and history ❤❤..jai..shree..ram..

thnq maam , CONCEPT HUA CRYSTAL CLEAR , it really means a lot ,thnq so much🙏🙏🙏🙏🙏🙏🙏🙏

Thankyou ma'am for your great efforts 🥰 all concepts are crystal clear 👍please upload the electromagnetic waves Ani nuclei as soon as possible 🙏

1:01:36 .. Mam in the denominator ( r) will also come.

Words couldn't Express my gratitude towards you..thankyou so much for your efforts mam I studied my whole syllabus from you only💜💜💜

A good physics teacher should be like you 😊

i'm watching this video live, relaxed eating my dinner , because mam's voice is sooo calming and she explains concepts soooo well!! literally the best teaching platform, mam please make a video on wave optics as well, i am very well sure many students are looking forward to complete their term 2 and are dependent on your teaching skills!!

thank you ma'am!! absolutely wonderful session..made good notes..now will practice the questions from textbook! thank you again ma'am

mam you are so talented and your videos help us a lot you are the only teacher who teach all subjects PCMB mam you are great ❤️

Ma'am , your knowledge level is amazing! Thank you for this lecture series!

Who is studying just some hrs before their revision class (coaching)

Raosni mam ap last moment pr ek angel ki trha ho ek dum mst padhai hai padso mera exam hai or ap se Maine sre modern physics padh liya hai ache se thankyou maam❤❤❤🙏🙏🙏✨️✨️✨️

Concept hue crystal clear ❣️

at 1:01:25 maam forget to put r in equation but formula which she derived is not wrong

thank you for the video maam :). also there is a correction : BOHR'S RADIUS (1.01) you missed R

In topic Bohr's Radius formula of v² was : v²=Ze²/4×pi×Eo×m×r By this formula answer is coming correct but you have skipped r in this formula , still you wrote correct answer at the end.

4 march -2:00 pm exam 3 march -11:00 pm start study 📚✏ 🤖👾

Concepts is crystals clear 🫶🏻🫶🏻🫶🏻

Thank you so much mam for your great efforts I know we have very less time Mam meri apse request h jo syllabus delete hua h from CBSE please hame vo bhi karva dena becoz deleted syllabus bhi ayega hamare entrance exam me.

Crystal clear one day before exam revision

Dear Roshini Mam.... Thank you so much for this wonserful lecture...Lots of love and salute to your hard work and dedication.. We are eagerly waiting for this.. Next wait_ Ray Optics ....

Thank you so much Roshni Ma'am for these one-shots ❤

Kis kis ki physics ki preparation nhi hui

concept hua crystal clear 😄👌

1:03:38 was just waitin for those "r" to show up out of the blue🤓

right before the physics exam, thanks for a great recap 🙏

Mam bohr's radius me Jab v(sq.) Ki value nikali to denominater me nahi likhna kya !!!🤔🤔🤔🤔

1:01:30. She didn't considered radius "r"

Deleted Topic cbse 2024 Spectral Series, Bohr Model of Hydrogen Atom - derivation deleted, Line Spectra of Hydrogen Atom - qualitative treatment retained Deleted Exercises 12.3,12.11-12.17

19:10 paranormal activities reported😶

Tension me padha nhi ja rha😢

Cant believe mam...you are doing so much for us.....will never forget your efforts😭😭😭

R limitation stability of atom does not explain Ut does not tell about electronic structure Dual nature Tomic spectral lines

1:03:36 , r value is missing from LHS. At 1:03:39 it magically appears. And Ma’am didn’t mention her mistake at all.

At 1:01:37 r kaha gya?? V²=Ze²/4π.ε0mr hona chahiye na and 5:52 & 20:00 not radius but diameter of an atom is about 10^-10 and diameter of nucleus is about 10^-15.

Thankuuu mam for this amazing lecture....salute to ur teaching.... literally sare concept crystal clear ho gye....and also ur smile creates this lecture more interesting and fruitful...once again thanku mam

mam thomsons model of atom Heisenberg uncertainty principle De-Broglie’s hypothesis: Wave-particle duality for matter De-Broglie’s Explanation of Bohr’s postulate are not there in syllabus kindly clarify we are to do or not?

Can we watch this video for the syllabus of 2024-25??

1:02:00 error - denominator is 4pi Eo m r but ma'am wrote 4pi Eo m

Concept huaa crystal clear❤️🦋

Watching this lecture one night before PRE BOARDS 😀😆😚😗😔😔😜😑🤪😱🤪😱🤪😱🤪😜🤤🧐😜🤨🤫😞😡😞🙁😦🙁🤥🤯😷😷🤯🤯🤯🤯🤯🤯🤯🤯🤯🤯🤯🤯🤯🤯🤯🤯🤯🤯🤯🤯🤯🤯🤯🤯🤯🤯🤯🤯🤯

Concept hua crystal clear 😍

there is a mistake in 1:01:36 where is ( r ) in V^2 formula . mam plz correct it as it is wrong in whole section

Crystal clear ma'am. Thank you so much. 🙏🙏🙏🙏🙏

Thanks a lottt mam .....all concepts got cleared and there is no need of reading the physics book as u have mentioned all the concepts....... very grateful mam❤️

Yes mam concept hue pura crystal clear ❤❤❤😊😊

Best teacher forever ♾️♾️

Thank you so much ma'am.. please upload remaining chapters too..🙏

Thank you ma'am Concepts are crystal clear 🤗🤗

It is night 1:39 when i wake up because of electricity cut down. But!!! Mam's video was published 2 hours ago, with 5.1K VIEWS 😱😱😱😱😱 She is amazing

Tum log padd rhe ho pehli baar ? Mai toh sirf revise krna aaya hu ….Rajwanti ma’am student CBSE relevant cheeze pdunga sirf…..

1:03:30 jaadu... r achanak se baad me aaya😊

I will miss you mam after 12th❣️ .........................mmmm

May I am struggling in this chapter from long time And Seriously Concept crystal clear ho gye 🥺❤

1:02:08 mai r is missing in denominater 1:02:08

your style of teaching was awesome

Rutherford Alpha particle positive charge helium particles panerationg power low