Chimney Problem JEE Advanced 2023 Solution #1 | Not a Controversial Problem by Ashish Arora Sir

Chimney problem asked in JEE Advanced 2023 was considered a controversial problem by many students and teachers. But this problem is based on a direct concept of Bernoulli’s theorem already studied by almost all students in the chapter of fluid dynamics and it also covers slight mix with gas laws for density calculation. In this video Ashish Arora Sir is explaining the direct solution of the problem along with the concept explanation based on which this question was asked in JEE Advanced 2023.
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#chimneysolution #jeeadvanced2023solution #jeeadvancedsolution #joSAA2023 #jeeadvancedresult #jeeadvancedscores #physicsgalaxy #ashisharora

[@physicsgalaxyworld]

Best book of chapterwise PYQs of JEE Advanced with detailed comprehensive solutions. Check at : amzn.to/3ZXotZs For Application based resources & NCERT Case studies for JEE & NEET join PG Telegram - t.me/physicsgalaxyworld Best online courses on JEE & NEET, download Physics Galaxy mobile app. Download link : bit.ly/PhysicsGalaxyApp Best Books for JEE Advanced Preparation - Bestseller book of 700+ advance illustrations. Check at - amzn.to/3qyIK8H

[@afjalsheikh3471]

Sir please iska hindi version bhi launch kariye

[@sid9824]

Sir I think the problem in this question is that H is not negligible as compared to h so if you consider atmospheric pressure at bottom of furnace the height will be 10 and if you consider atmospheric pressure at top of furnace the height will be 9........thus it is giving different velocities. Pls clarify

[@debkantapaul6369]

Normal people:- This is a controversial problem . Legend Asish Arora sir :- This is a very fundamental question that can be done by basic concepts in 60 -90 seconds 😄😄😄

[@bluesky5794]

Ha to kahaka controversial tha

[@ninetailedamv7983]

giga chad of physics

[@adithyahariharan4293]

Video duration 18 min 26 seconds 🙂

[@debkantapaul6369]

@@adithyahariharan4293 😂😂😂😂

[@debkantapaul6369]

@@bluesky5794 abhi bhi controversy chal rahi hay

[@Sarthak_Hari_Pandey]

Every physics teacher is gangster untill Ashish sir arrives 😎

[@user-mc7oj2cn6n]

😂😂😂😂😂😂

[@MohitSingh-kl5pf]

Tru tru

[@MohitSingh-kl5pf]

@@shashvatpandey3028 thermokaul

[@AdarshKumar-vn2ot]

RKH sir and MB sir still Right 🐐🐐

[@Vishalkumar-uz6ki]

Sahi kaha bhai

[@shka2961]

Teachers who specialise in just 1 subject take 2 days to release the answer key after seeing the paper.... they have freedom to take hours to solve it with relaxed mind and then call the paper easy meanwhile a student has to solve all three subjects with average 1 hour per subject with exam pressure etc and thus it is difficult for us 🙂 Not talking about any specific teacher but every teacher finds the paper easy...they have been teaching since 15-20 years ..this is their forte

[@ankitjoshi8031]

Also they give the answer through research that by help of resources while we have to answers on the spot through our own active recalation

[@morijin5568]

he said it quite clearly that this paper is easy if compared to the past 2-3 years physics paper, which is true.

[@shka2961]

​@@ankitjoshi8031 right they take references from many sources :)

[@shka2961]

​​@@morijin5568 that is subjective....some found it easy some found it comparable

[@Shubhanshu05]

​@@shka2961it was comparable to 2022 physics and on a higher level than 2021 physics But yeah obviously 2016 and 2020 physics>>2023

[@anshpathak4691]

No one literally no one , Ashish sir : *This is a very fundamental question that can be done by basic concepts in 90 seconds* 😂

[@anshpathak4691]

​@@Garv-ok9ur yes

[@itachu.]

​@@anshpathak4691cap

[@bluesky5794]

​@@itachu. Aapse nhi hua to kya kar sakte hain...cap cap hi likhte jao

[@HASANALI-it5mo]

@@bluesky5794 pichlay saal ka isse acha tha agar out of syllabus ko ignore kare magar ismay log lengthy question ke karan vahan fase thay

[@godofthunder1437]

Without using pen and paper

[@Goodhuman01]

Here after IIT GUWAHATI dropped the question. It was only Jayant Nagda Sir who was standing with student as the question was wrong,whereas Ashish Sir and NMS sir saying question was of 60sec and justifying the answer all top physics teacher said that u can't take pressure outside and inside same. I respect Ashish Arora Sir and have followed his 700+ book and was very helpful for advanced My rank in adv. Is under 3k and Ashish Sir book helped me alot. THANK YOU!!

[@Shubhanshu05]

Rajkumar sir too

[@dab6923]

Rkh sir did it first on jee challengers PW , he proved iit wrong.

[@SAHILSINGH-fl2ev]

@@dab6923 He is a different breed i agree, I remember he even challenged the Olympiad question and later , found out that he was right, his answer was right in whole india. Quite a remarkable feat for sure.

[@mathamaticholic3738]

@@dab6923 vinay uppal also

[@SauravKumar-ed7oz]

Bhai ye same question MIT ke ek source ka hai Jee Advanced walo ne sidha question utha liya hai wha se...

[@drrakeshprajapati572]

Now i understand why mridul score 348/360 in jee advanced bcz every question in jee adv paper is fundamental que.🙏💖 Ashish sir=G.O.A.T of physics😊

[@avi56..]

120/120 in physics 😏

[@user-ry6ho6hr5r]

💯💯

[@EMERGINGGamer]

wrong solution ki tareef karte hue balak

[@Sarthak_Hari_Pandey]

Other teachers -15 minutes mai karduga Ashish sir - basic questions hai 60-90 sec mai solve kar sakte hai 😎

[@ArnavTHR]

18 min ki vid hai

[@shashwatgupta397]

@@trxe1050 sad to see such innocent aspirans who dont know the legendary ashish sir

[@abhinavjha5486]

​@@shashwatgupta397 jee advanced kaisa gaya bro

[@shum_zx]

​​@@shashwatgupta397 sad to see people's like u who are andhbhakt 😂.....chimney ka 1m ko he ignore kar diya sir ne🌚 rattu hay kya tumhare legend?

[@MixbOOsted]

​@@ArnavTHR Unhone video me samjhaya h solve nhi kiya hai aur bhi discussion kiye h -_-

[@shlokjain5214]

9:13 It is said that density and temp. does not change in furnace and chimney seperately, when gas goes from furnace to chimney than it can change

[@qwertyasdfzxcb]

Son you have no idea what you said

[@romapal5529]

Bro, in question it is already said "neglect variation in rho and temp. inside the chimney and furnace 😂

[@burningsolaris9421]

sir please do bring content for JEE 2025 aspirants!! you are the best teacher!

[@user-er2bq4sd1u]

13:34 sir in the equation u just wrote if i put H/2 in bernoullis eq. i get different value of V2....this shows that v2 is not constant in entire chimney

[@realshubhamrawat]

Wrong Approach, You cant neglect 1 metre height because it's not given that h>>>>H , so its a wrong approach of question !

[@realshubhamrawat]

​@@onlystudyjee787 Yes bro but the gas is entering from outside of the container and we know pressure on same horizontal height is same so If you apply Bernoulli's Theorem outside the container we have to use the 1 Metre height we can't neglect it !

[@newhi7559]

@@onlystudyjee787 bhai 1m height aur 9m height very greater nahi hote apne concept clear karo

[@hindu2612]

​@@newhi7559😂😂😂😂😂😂😂😂😂😂joke mar rhe ho

[@krishgarg2806]

mai baar baar wahi soche ja rha hu, chimney ke just neeche Pa, to exact same height par bahar bhi Pa ho? hazam nhi hui baat, H (with density of inside the apparatus) neeche jaake bahar aana chahiye fir H+h (with density of air outside) fir h (with density of inside) neeche aana chahiye.

[@Sarthak_Hari_Pandey]

Legend came back when we need him 😎👏

[@hindu2612]

Sir:There is no controversy IIT: Let's Drop this controversial question Sir:😅

[@swifter_for_real]

This is even way better .. Thanks for explaining like that.

[@aim-iitonly]

Such a nice video sir...thank you. Also can you you make a video on how to solve questions fast after knowing the formula and knowing the concept but still can do it fast.. don't what to think and what's the next step

[@user-vr4ud8go2c]

You solved it very quickly 🤩

[@Kunalkumar-je2ur]

You are just amazing sir....

[@nilaykumar1339]

Sir, this question seemed quite impossible but when you explained it clicked me in just a second, thank you sir :))

[@amanpatra09]

Always waiting for your videos🥰 Thanks a ton 😊😊😊

[@Kunalkumar-je2ur]

Sir, I solved capacitor and electrostatics from physics galaxy, my confidence level😎

[@mrallenitewala8343]

Thik tumhari air 1😂

[@divysuthar5622]

Pf lagale....😂😂

[@dedicated2304]

​@@divysuthar5622 rehne de bhai beechara neet krne chala jayega

[@krishnaupadhyay1057]

​@@divysuthar5622 pf kya hai (oh pathfinder 🥶 yaad aagaya)

[@weeb246]

+ 200 puzzling problem,200more ... 300 creative prob jaan kalda handouts agar solve hogaya toh confidence +++ wrna 💀💀

[@Rao_abhishek_]

Physics legend Aashish sir 🙏

[@somilgupta8756]

no one can replace u sir love u sir gjb

[@thatonerandomguy9764]

@@eueueuw27272 kya karega janke, tera jee hone ke baad bhagwan na kare agar acchi college nahi mili toh tumhare junior same sawaal poochenge toh bada dard hoga bhai

[@facthub9964]

Abb to lgta hai HC VERMA sir ko hi utrna pdegi field me 😊😊

[@Artificial-short]

Question k level doesn't match to his level

[@captainsparrow6821]

The legend himself ⚡❣️

[@vishakhaarekar3978]

Thank you sir

[@pavanharne139]

Wow sir such a beautiful explanation

[@ritika2336]

Sir you are THE BEST 👍🏻👍🏻

[@Mbzaiimsd]

Very smoothly done ❤❤❤

[@harekrishna5992]

Very Nice explanation sir

[@manasmittal5453]

Best teacher on the planet for physics

[@AdarshKumar-vn2ot]

RKH sir ne 1+ hour (30 min 2 video) samjha question ko sab cheez samjhate hue. Phir bhi log 10-15 min video dekhar unko galat bol rahe hai.

[@pratyaybhattacharyya3622]

Rkh sir 100% sahi hai i am sure.

[@valaygarge1676]

sir please discuss the circuit problem by assuming opposite direction current

[@un7ed218]

The physics legend

[@anvaybarve10thd40]

great concept

[@chaitanyatelagani550]

Calm and cool

[@yashkumar2313]

Namo kaul: I will make 2-3 videos on this question because it's tricky.. Ashish sir: and I took that personally

[@yogpanjarale]

Ashish Arora Sir The legend 🔥🔥🔥

[@aniketmehetre9350]

Padhle yog

[@yogpanjarale]

@@aniketmehetre9350 thank you aniket

[@RegisteredLate123]

Chill out buddy he doesn't know u

[@yogpanjarale]

@@RegisteredLate123 we were classmates few years ago 💀 how you doing aniket 👋

[@akshatbhatt7922]

​@@RegisteredLate123 i have seen you in almost every channel

[@deepanshu20831]

But the whole point of controversy is that why the pressure inside the furnace will be same as it's height is 1m and chimney height is 9m so its not negligible. And sir totally did not talked about that point and said that assume that pressure will be same ...but why it will remain same . It will change

[@physicsgalaxyworld]

Yes that is a point of assumption in question, sir will release a video on this discussion soon

[@jaythakkar3451]

@@physicsgalaxyworld YES SIR I THINK ADVANCE DID NOT CLEAR THAT WHERE IS THE ENTRANCE OF THE AIR AT WHAT HEIGHT?

[@physicskipathsahala]

Sir, you are genius😊😊😊😊😊

[@aman7153]

You are just legend sir... I've always admired you sir.

[@aman7153]

@@eueueuw27272 in jee mains 9112 jee advance 14k last year

[@zaib_is_here]

This video is helpful 😀

[@meridien6001]

Bernoulli's formula : There is Datum to be considered as per formula : P1/(Rho. g) + V1^2/(2g) + h1 = P2/(Rho. g) + V2^2/(2g) + h2. What about the value of h1 & h2 of the formula. I see there is a difference of 9m. Please clarify

[@Samphysicsguy]

no words for this great man❤

[@harshsolanki146]

12:30 yaha pe pressure Pa nahi ho skta H=1m ki vajah se change hoga, chimney mein pressure constant hain, lekin atmosphere me pressure constant ye question mein nahi diya

[@mayankgoyal35]

Right

[@HangingQueen]

Abj Sir is legend of physics

[@Jk88_23DruT]

sir i had bought your physics book and it is amazing

[@armankumar4384]

Sir aapki offline classes bhi hai Kya ?? Agar hai toh bta degiye location

[@ayushgoyal5036]

Nms Sir ne bhi yahi bataya tha.....nms Sir is legend and Ashish Sir too

[@factplanet6259]

Best solution nms sir wale hai, simply samgh aa gya

[@vishwajeetchoudhary8264]

Sir solved this que in 8 to 10 mins and says that it is 90 sec question 💀

[@zzeronite538]

Wo explain kr rhe h ig

[@morijin5568]

has to be sarcasm from your end lmao

[@vishwajeetchoudhary8264]

@@zzeronite538 i am telling except explanation only bruh !

[@AdarshKumar-vn2ot]

🗿🗿

[@bhaveshanand6138]

The game changer

[@auxiauravideosfanmade9011]

90s bolke 18 min ka bana diya 💀 ... matlab ik ki yeha samjhaya toh zyada time lagta hai but 90s ka question toh ye hargeez nhi tha 🙂

[@spideymemes]

merko to read karne mei 4 minute lag gaye the

[@crazyman_1810]

He is not a teacher he is a god of physics who say it can be done by fundamental in 60 sec love u sir best explanation for those who says this is controversial question

[@bbsir]

Hi Sir! Since your entire discussion is based on its correlation with finding efflux velocity, in your way, I would like to point out certain issues. While finding efflux velocity , you took two points A and B ; A just inside the orifice and B just outside it. You applied Bernoulli's theorem. I have two objections to it- 1) You took pressure at A as P₀+δgh which is a condition of hydrostatic equilibrium and here you have a flowing liquid so this isn’t applicable. 2) Took velocity at top of vessel v₁ and the same value at A too, which again is totally incorrect, the streamlines will be much more condensed at A than at top of vessel so velocity will certainly increase.

[@mekohai4458]

Bro u have a misconception. Since the Area of container is large the velocity inside the container is quite small so it is assumed as the fluid is at rest. And for your point 2) velocity is taken constant all throughout the vessel as an assumption. Almost every teacher teaches u that. u need to pay attention in your lectures

[@bbsir]

@@mekohai4458 Please read the comment very carefully, line by line, word by word. The area of container is large and so the velocity of surface is very small. The orifice is very small and when streamlines reach there, the speed becomes very large. The point A is just inside the orifice.

[@physicsgalaxyworld]

if velocity will increase then density cannot remain constant as cross sectional area is same...

[@bbsir]

@@physicsgalaxyworld you found efflux for liquid in a container, uska density constant hai so vA=constant. Density constant hone se volume flow rate same ayega har ek cross section me. Exactly yehi keh raha hu, A decrease karegi, v increase kar jayega as streamlines reach from top to a point just inside orifice. Area is constant constant for stream lines. For top surface which is horizontal, streamlines are vertical and when they reach a point just inside orifice, the flow becomes horizontal and cross section vertical which is much smaller than the container’s cross section.

[@Lovenmssir]

@@physicsgalaxyworld before filling the chimney by hot air , the hot air goes up by upthrrust and cross section of efflux must be thinner

[@abc-yx5tp]

Moreover, the equation of continuity because is derived by conservation of mass, A1V1=A2V2 cant be applied considering change in density. So density also needs to be multiplied

[@divyanshmishra717]

Question me change in density negligible di hui thi

[@SantoshKumar-re2ip]

But sir pressure at the bottom of chimney is also pa so why can’t we write pressure at top most point of chimney as Pa- density of air * g* (9+1)

[@kashyapmopuru1486]

At 12:36 Sir I don’t think you can assume that on the same level the pressure is Pa because density is different. In the question it is given that it enters with the pressure Pa so an extra term of (rho atmospheric)g(H) should be there. H=1m then the answer is 60.8

[@physicsgalaxyworld]

Yes 1m should not be ignored... watch next discussion video on this by Ashish Sir coming soon !

[@badribishaldas9627]

Exactly

[@morijin5568]

@@physicsgalaxyworld this discussion video never came up lmao

[@physicslover4203]

Ab aya h real god of physics ❤

[@riteshraghavrajput9087]

NMS already told this and he was the first person who gives right answer

[@physicsgalaxyworld]

NMS sir solution is not applicable in this que. Watch the next video on this channel

[@SaurabhRaj-dx5gf]

Most genuine teacher , i hve seen in edtech

[@saurabhyadav7927]

..

[@Aman-BR]

Finally god of all god has come to end everything 🙏 😊

[@dr.8248]

Is Physics Galaxy book applicable for Neet and how is the question please guide!

[@anogav4294]

I failed guys getting 15 marks. I'm a dropper and i had many expectations. Many people were sad that they got 120~ but those were my target marks. I would have been on cloud nine. Yet, I won't be getting IIT . 5 years of dream crushed, life shattered. Crying for 3days now. I hope everyone who got good marks succeed in life and make this country proud. As a general, I don't have any hopes for my future. It looks so dark. Will remain as a simple life this birth. Will be writing BITSAT but no hopes there either. I will be Joining Parul University.

[@shashwatabhale433]

Don't worry bro.. Work hard from now..work on your skills and improve them.. Who knows you might be more financially stable than those who got into IITs

[@siddhesh6942]

Lakho me se sirf 10,000 hi select hoti iits me Iska matlab ye nahi ki vo 10,000 ko chodkar aur sabhi ki life kharab hai..

[@sleepyfella]

F bro I hope you won't stay jobless after btech

[@bluesky5794]

Haan to 8t jam Dede na

[@Regressorfromfuture]

U can get good things if u try great in college because employer doesn't seek a guy with a college but a person who is capable of doing the job

[@sikaripro4443]

That is all about experience and practice

[@swarit2689]

Completely agreed

[@learningwithsandeepnandgir9633]

Hence proved thst Physics is to think logically.

[@Jee2025-hd5iq]

Nice sir

[@mohithy8385]

Excited for new pg jee adv books

[@pronaykhan9734]

Sir pg books ke Olympiad problems beneficial honge kya jee advanced ke liye . pls reply sir.aur agar mene pg books ko effectively study and solve Kara toh kya physics me JEE advanced me full on full score kar sakta hun kya

[@remixnation6892]

absolutely, if u have time.

[@utkarshmishra1302]

Sir kindly accept that your answer was wrong, thats why iit has drop the question .

[@orangesite7625]

Muje pata tha ki Bernoulli theorem hi tha but pata nahi ki kise use kare use, if only i had a good teacher or a good book😢 but for now i crossed my aggregate marks in Advanced

[@eueueuw27272]

What is your Rank bro?

[@SahityaBhattacharya2006]

finally, iit dropped that quesion , good decision ☺

[@Strugglechapters]

Sir plzzz make video on Block śtraťergy for Neet24 for dropper stūdent and also best books

[@abhishekgoswami9561]

Ashish sir rocked and other teachers shocked ❤

[@hindu2612]

And the question is dropped ❤

[@manasmittal5453]

Sir you are most educated physics teacher In the county

[@eueueuw27272]

What is your Rank bro?

[@afsheentahira3241]

12:31 how did we assume outside pressure to be Pa at that point?

[@PhysicssimplifiedbySunilBalani]

With due respect sir I differ with caption that there is no controversy . There is indeed a controversy , If pressure and temperature is constant over the furnace when the air enters the furnace it's density would change now to sustain convection there is no temperature gradient over this one metre region . Next if 9 m air column outside is relevant then how 1 m air column outside can be ignored . The whole debate is about 1m region and the magical way fluid is flowing against gravity without any gradient in pressure or temperature . It is not an issue who is right and wrong , what matters is the effort to analyse and I maintain that there is indeed a controversy due to marking of same pressure and temperature at two points separated by 1m distance .

[@physicsgalaxyworld]

watch next video by Ashish sir on this... where sir has explained all points on which controversy is being talked upon... link is here - kzbin.info/www/bejne/aGTFg6Jjh9ush9U

[@PhysicssimplifiedbySunilBalani]

@@physicsgalaxyworld As sir recognises that there is controversy then why thumbnail the video as 'no controversy' .. that was the sole point I was trying to make .

[@ornament_of_throne12346]

@@PhysicssimplifiedbySunilBalani arey miya socho views kaise aayengey agar sidhi sidhi baat kehdengey to???

[@PhysicssimplifiedbySunilBalani]

When there was no controversy as suggested in the video why IIT had to drop the question and grant bonus ?

[@Life__Is__Beautiful_]

Nope ans is 60.7 what rkh sir is saying is absolutely correct

[@Shreyas_Jaiswal]

Bhak

[@Shreyas_Jaiswal]

Jab sawal me likha hua hai ki furnace ke andar me presure Pa hai, aur temperature Ta, to H height me Variation kyu nikal rahe ho?

[@AdarshKumar-vn2ot]

​@@Shreyas_Jaiswal lagta hai tumne IE Irodov nahi dekhi hai 😂😂 RKH sir ko nahi jante. Ans is 60.8 only here you can't neglect H(H=1m and h=9m) *while writing pressure variation "outside".* Watch RKH sir and MB sir solution🐐🐐.

[@krishnaanand917]

@@AdarshKumar-vn2ot yeah I do agree that ki bahar pressure change hoga H ke saath, ek baar Vinay Uppal sir ka solution dekhlo, unhone public kar diya hai. Unka answer 47.1 aya but unhone proper concept use kiya. Jaisi ki yahan pe sir ne hydrostatic condition liya bahar me even though air enter kar raha chimney me bahar se toh hydrostatic nahi hoga, toh vinay sir ne hydrostatic nahi maana aur acche se kiya.

[@vinitiitr2021]

​@@Shreyas_Jaiswal😂😂to

[@vaibhavkrish4619]

Itne sare solution dekhne ke bad ek btt toh clear hogyi ki yeh Question bonus hi jyga🤣🤣🤣😂

[@theworld6021]

Aapka hi wait tha

[@AbhishekKumar-xf7fq]

Nms. Sir ne to equation of motion laga. DIya 😂😂😂😂

[@physicsgalaxyworld]

That method is not correct... in question it is clearly mentioned that density variation is to be ignored means in chimney velocity of air will remain constant... whereas NMS Sir has solved the question with varying velocity... Watch this video to understand the concept clearly...

[@pranavsolanki3500]

Sir jee challenger channel pe rajkumar shukla sir wale method se toh 60.81 aa rha hai. Unhone bhi fluid se hi question solve kiya

[@AbhishekKumar-xf7fq]

@@physicsgalaxyworld yes sir mein bhi yahi bolna chah raha hu ki aapka correct explanation hai bernauli wala se jabki ye iit wale ko challenge bhi kar Rahe hai 😅 sir aap samjhate nahi ho kya 😄

[@Idk78566]

​@Physics Galaxy sir how have u neglected the 1m height ?its not given in the question that h>>>H. Isn't this a wrong way of trying tp hey the answer ?

[@Idk78566]

​@Abhishek Kumar bhai qn galat he we cant neglect H. Usse ans nahi aata. Mit ke qn me h>>H isliye we can apply our concepts. But here we cannot do it simply

[@physicsformulas8403]

Pranam sirji

[@pratayamistry9721]

This is the most accurate answer

[@kashyaptandel5212]

I am 2025 aspirants, should I watch this series? since many concepts aren’t learnt by mee yet, so will it be beneficial?

[@GV22m06]

Fluids+thermo ke baad krna

[@ninja0o0557]

​@@GV22m06 where can i study pcm adv level??

[@omansh.12]

@@ninja0o0557 if u r a beginner , then first build basics as advanced questions always contain mixed concepts from 2-3 chapters , if u have done some chapters then u can try pyqs or ur coaching (if u have one) should take care of these things

[@kashyaptandel5212]

@@GV22m06am back, about to complete fluid and after that will attempt this question myself.

[@piyushkaushik2643]

Sir aapki book k sare ques jaruri h ya phir practise problem chod ke sara krlu

[@dharmenderbhardwaj9180]

Right answer 47.1

[@AdarshKumar-vn2ot]

Still I would prefer solution by *RKH sir(From PW) and MB sir(From Kota pulse by unacademy). 🐐🐐*

[@prateek746]

God is back Everyone is gangster until ashish sir come😂😂

[@anshpathak4691]

Is hydrostatic equilibrium valid ?

[@physicskipathsahala]

My all doubts about this problem have been flushed

[@NikhilSingh-tt8rg]

Op sir your teaching style is next level❤❤❤❤❤

[@brg122]

12:28 this is mistake,what is logic behind taking pressure outside chimney as Pa??????

[@igviness]

NMS Sir ❤ is correct 💯 u have done the same thing

[@physicsgalaxyworld]

No both solutions are different... NMS sir considered velocity variation in chimney whereas in question it is clearly mentioned that density is constant so velocity in chimney cannot change... first watch the video and understand this...

[@sunilbhat5283]

IIT Gauhati has accepted the problem has a PROBLEM so has withdrawn it. The upward flow of air is due to difference in density and not pressure difference. So getting a correct answer doesn't mean this solution is correct.

[@RQsir]

I heard alot about Ashish sir and a huge respect for him and I Learned from NMS sir dono ka same answer ……jo log kah rahe the Bernoulli laga ke alag ayega unhe burnol ki zaroorat padhne vali he 😊

[@RealprachetasisherexD]

Another Physics teacher Vinay Uppal sir got the same answer....he even did predict the range of the answer key

[@AdarshKumar-vn2ot]

😂😂 when you don't know the actual concept. Ans is 60.8 only here you can't neglect H(H=1m and h=9m) while writing pressure variation outside. Watch RKH sir and MB sir solution🐐🐐. *Hume burnol ki nahi tumhe dimag ki jarurat hai.* 😂😂

[@anshpathak4691]

​@@AdarshKumar-vn2ot Nhi , IIT ke prof. Chutiye h na ? Unhone to kuch pata hi nhi , kaise bhi answer de denge . Unhe thodi na kuch aata h unhe to ab RKH sir se tuition lena padega 😂. Are profs. Ko bhi expertise h unke subject me , unke aage ye teachers kuch nhi h . Ab tum bonus ke liye kuch bhi karoge

[@samop5390]

@@AdarshKumar-vn2ot aur ye log RKH sir ko challenge kar rahe jinhone pura irodov solve karke solutions ki book nikali hai

[@gyaneshpathak6709]

​@@samop5390 tum IIT ke prof. Ko challenge de rahe ho kya ? Vo pagle log h kya ?

[@SatyamKumar-jp7zi]

i am expecting this

[@user-vi7us5wy1z]

Sir me drop kar reha hu please koi jee mains and advanced ki series karo 2024 ka reh ❤❤❤❤❤

[@iitb123]

Legend finally came to give actual solution

[@saumypandey2288]

Vinnay upal ka naam suna 😂😂😂

[@anshpathak4691]

Answer key aane ke baad to koi bhi bana dega , vinay upaal , Surya sir aur NMS sir ko dekho

[@Nishantkumar-lm3sd]

​@@saumypandey2288 ashish sir clarify kar diye re baba ki ye controversial nhi hia

[@harshitrajput3566]

​@@anshpathak4691 abe nms sir ka galat hai unhone toh motion ki equation lga di 😂

[@rflattitude2217]

​@@anshpathak4691 nms sir is wrong , upaal sir is right

[@SaurabhKumar-xk4pn]

Totally wrong solution : First see conditions of Bernoulli’s equation. The conditions are :1) Irrotational flow 2) Inviscid region of fluid flow 3) Steady flow 4) Incompressible flow. Here the density is changing that means flow is compressible. So you can not apply Bernoulli’s equation here. This question can only be solved by Unsteady state flow analysis which we study in 2nd yr. of mechanical engineering an even for that sufficient data is not given like adiabatic chimney and all. So this is a totally wrong question. It’s an BONUS mark question.

[@mekohai4458]

Now it depends on IIT(if they give bonus on this or not) to prove which Physics teacher is ri8....UK IF UK.....