JEE ADVANCED 2020 SOLUTIONS - TRAIN TUNNEL BERNOULLI PROBLEM ||MISCONCEPTION - Clarified

[@PHYSICSSIRJEE]

16 hours of hardwork spread over 9 days , and finally , I was satisfied with the output✌️ I wanted on this 15 min video ( premier today ) . Lots of slides re-written , cancelled , replaced , choice of practice problems changed multiple times😉 . This was to ensure not only to provide the solution but also to cover the complete concept and bust wrong concepts commonly used in such problems involving Bernoulli's equation . Let's see who was wrong this time , JEE or coaching materials or students 🤷in this step by step explanation of all concepts. I know , what I believe is good need not be liked by others , but this time , I am actually proud🙋 of the honest effort that went into the video irrespective of the outcome . You may revise some of the previous videos in fluid dynamics playlist before this video premieres 👇 and don't forget to "Apply some pressure on the like button😁 " when the video is out. Lots of love and enjoy the learning 🙂❤️ 18_FLUID DYNAMICS: kzbin.info/aero/PLtzNDt-x8_02gk5bit0v8mt2uvOyl-EyZ

[@krishsharma162]

Sir Ur efforts are priceless.

[@PHYSICSSIRJEE]

@@krishsharma162 Thank you Bernoulli JEE 🙌🙋😉

[@omjamdar7094]

We really appreciate your work sir. Success takes time but when the time comes it will blow everything in past and will put you on that much height so the height only solves all the problems... when your channel will grow you will get a lot of views on the videos which you have done earlier so keep going we are with you always

[@amiyancandol4499]

Yeah it'll take time for the crowd to shift from those channels which claim to be for " jee adv " to these channels which truely are for that. But when it does it will blow up and all of this hardship will be worth it.

[@dhruvmisra8010]

The link to the playlist doesn't work sir

[@dishakayande3997]

sir i have seen no one explaining jee adv pyqs with this deep insight and conceptual clarity...u not only do post martem of the problem but make us learn at which level of understanding we need to solve such questions and also give future possible situations on similar questions...and thats why jee adv pyq series is my favourite...love u so much sir...😄

[@parthasarathirout9886]

Sir the answer is 9 and I have applied a pressure to like this video. Thank you sir for your hardwork.

[@chromaxetian496]

I am very happy that i came across this physics channel. Its pure gold.

[@bhaumikgoyal9668]

Who have liked the video without seeing it keep it up sir .

[@viv1.mishra]

Sir thank you from bottom of my heart. These conceptual questions of playlist are really helping me to understand the topics really well. Thank you very much sir . I really appreciate the amount of hard work you are doing for making problems easy through pictures and other methods and it is really effective. Sir I know you are busy but please make these types of videos when you are free. I don’t know you will read or not but sir your analysis problems always makes my day and I feel that I really understand the topics. I’m jee 2022 aspirant. Thank you sir again

[@PHYSICSSIRJEE]

I try to read and reply to all relevant comments 🙂

[@Jeeprep-dm3pq]

A committed teacher is the best gift you could give a student.. Keep up with the great work!

[@der05ka1ser]

16:53 we could use Bernoulli in the rotating frame but we need to use the potential energy due to pseudo force . My answer is AD

[@simplephysics104]

JEE Roast series continue....only janardan sir have courage to say that jee had made mistake with proper explanation and logic. Thank you very much sir ❤️ for all the knowledge what you are imparting to us.

[@physicsguy6625]

Sir, to be honest I haven't even reached till fluid mechanics however I still watched this video 'cause I just love your explanation.👍👍👌🔥🔥 Too good...!!!

[@omjamdar7094]

It is the quality of one's convictions that determines success not the no. of followers

[@eshh183]

16:12 Can't apply Bernoulli as the streamlines dont even exist in the car

[@PHYSICSSIRJEE]

True 🙌

[@reubenpeter7229]

Tysm this level of deep application really cleared a lot of doubts in my head ty sir

[@yashagrawal8592]

Was waiting for video on this problem from a long time , Thank you very much sir 🙏🙏 !!

[@vanshajgupta7682]

SIR PLEASE BRING SOME MORE GOOD QUESTIONS FOR ADVANCE 2021 CONCEPT CLEARING .

[@shashwatdwivedi8184]

I remember when I saw this question in paper 2 while I was in examination center first I got panicked then I remembered that during a storm when wind blows at high velocity the pressure under the roof and above the roof is different. I tried to use Bernoulli's equation but because I have panicked earlier I did the same mistake that 8/9 one and I was never able to reach the answer in time. I can remember what happened to me exactly with every question. Thanks a lot sir you make me more confident with every video of yours. I hope I will be able to perform in JEE ADVANCED 2021. Thank You again.

[@PHYSICSSIRJEE]

Trust in your hardwork and honest preparation , you will do well 🙂👍🏼

[@shashwatdwivedi8184]

@@PHYSICSSIRJEE Thank You Sir 🙏

[@riddheshpatil7598]

@@shashwatdwivedi8184 are you a dropper?

[@aayushjoshi3681]

@@riddheshpatil7598 Of course

[@shashwatdwivedi8184]

@@riddheshpatil7598 Yes

[@shikharmishra785]

Sir pls take the piston-vertical cylinder problem of paper 2(bonus) next in this series.

[@anuradha4915]

Keep up Bro. OP Efforts. Nobody on This Earth Explains these Problems like these.

[@masoomladka7198]

noble prize winning analysis

[@PHYSICSSIRJEE]

Kuch bhi 😂😛

[@agnivnath8572]

Thankyou sir for clearing those miss conception.. now all is cleared.. sir in 17:02 mins the qusn from AITS. I m getting the ans as A and D

[@PHYSICSSIRJEE]

Correct 👍🏼🙂

[@shivasudhan165]

Thanks a lot sir

[@saeshwaran]

It's ironic that the mind of literally all the t JEE Advanced toppers go 'skip' right after seeing a problem of this magnitude.

[@lostNseeker]

Love you sir....that was amazing

[@ishansingh2391]

Very beautifully explained thank you sir and hats off to your hardwork sir ans some questions on quora your subscribers will increase

[@PHYSICSSIRJEE]

I will do that once I am free

[@ray_7594]

Sir your long conceptual videos are gems ...thanks sir thank-you so much

[@Fighter_Believer_Achiever]

Thank you very much sir🤩🤩🤩🤩

[@bhaumikgoyal9668]

Sir also dont forget to make video on inductors involving mutual inductance plz

[@PHYSICSSIRJEE]

Already done last week. Please check playlist

[@amber1171]

Simply amazing

[@harshithsuda2899]

SIR THIS VIDEO IS REALLY WELL MADE.VERY CRISP AND VERY ELEGANT.😊

[@anushkrajbordia1873]

JEE wale be like: Make a paper so that this guy can't roast it.. izzat ka sawal hai IIT ke liye 😎😂 (I know this wasn't a roast video but mostly sir roasts JEE badly, & we very much love those videos)

[@PHYSICSSIRJEE]

JEE problems are mostly correct , but last year was bad 🙂

[@puspalpaul185]

@@PHYSICSSIRJEE Sir I think the anomalous qns of last year are over

[@PHYSICSSIRJEE]

@@puspalpaul185 not yet , I think . Let's see

[@puspalpaul185]

@@PHYSICSSIRJEE Sir plz do take the previous practice problems in decreasing order of difficulty sir 🙏🙏🙏 ..... Although most of them are well disscussed in cmnt section and discord

[@PHYSICSSIRJEE]

@@puspalpaul185 I will try as much as possible with whatever free time I get

[@arhaanahmad3953]

Thank you sir for such relevant content. Really learnt Bernoulli's equation in more depth.

[@yatharthgupta6468]

Another gem of a video Thanks sir👍👍

[@sarthakmishra1483]

Thanks sir for the amazing analysis i was able to solve it in a first try since the expression was it self a hint ❤️❤️

[@sakshammisra3756]

I had problems regarding this topic Thnx sir

[@anirvankrishna2503]

sir the practice problem 1 was from my coaching's AITS 😂😂😂😂. Thank you so much for giving such a superb clarity in this concept🙏🙏🙏

[@PHYSICSSIRJEE]

Thank you for your appreciation 🙂. Keep visiting the channel 🙏

[@anirvankrishna2503]

@@PHYSICSSIRJEE Thank you so much for your reply sir. Your videos are really providing a great aid in my prep🙏🙏. The practice problem discussed in this was solved by me in the paper but I was unaware of that conceptual error I made there. Thanks again for this video 😊😊😊😊😊😊

[@vatsalkumar2678]

Sir you just a gained a subscriber

[@nrgjkrnjgknrjkgbhtr]

16:40 The eq is applied in 2 places which r not connect by streamline

[@nrgjkrnjgknrjkgbhtr]

solun t 2nd problm I'm getting B &c

[@abhishirshsachan8694]

16:48 the answer should be D: as at point 1 it is a rotational flow Then this question can be converted into ur previous video question where b= l and a= l/2 .The fluid is filled in between the two Apllying previous results we get tap speed flow just outside the tube wrt tube as √3wl/2 ie option A. Answers :A and D

[@abhishirshsachan8694]

@Physics Sir JEE please Reply sir.

[@PHYSICSSIRJEE]

@@abhishirshsachan8694 correct 👍🏼

[@gautam5055]

Great one sir :-)✔️

[@ProTeachers]

Very nicely explained sir. Which app you use for making videos, sir?

[@PHYSICSSIRJEE]

Zoom or msteams , pdf annotator or open board

[@ProTeachers]

@@PHYSICSSIRJEE ohk thank you sir.

[@Vamsivamsi-we2ev]

Sir i like ur effort of providing all these tough question free in you tube for jee asprirants . Really i like your passion sir🙏🙏💜.I hope you will continue the you tube channel. And we will definitely support you sir

[@shubhayanpan6889]

thank u sir..very nice..the practice problems really help in catching the actual intuition of the concepts...keep it up sir...

[@dochrishistrange]

Thank u very much sir , u truly fulfill learning physics, u have got a xtra daily learning student now 😎😎😎,

[@vedant6598]

❤️❤️ love you sir ji

[@AshokKumar-rb3qp]

Thanks a lot sir for such a knowledge rich video. Deserving students are getting this quality content seating at home, free of cost.

[@prateekbheda9802]

Thank you sir 😊😊

[@gaussiit4855]

Thank you sir. My concepts got crystal clear for Bernoulli's eqn😄

[@srslyumang]

It was very nice Question... Solved while giving mock test ☺️🤩

[@yashkrishnatery9082]

sir it's a humble request to make a video on physical difference in pressure energy and kinetic energy of a fluid

[@yashkrishnatery9082]

And video on difference between angular frequency and angular velocity would be highly appreciated

[@PHYSICSSIRJEE]

Pressure energy was already explained . Please check fluid dynamics playlist

[@PHYSICSSIRJEE]

The second one is very trivial . They are two different physical quantities. May be , we look at their difference from a problem on phasors

[@yashkrishnatery9082]

@@PHYSICSSIRJEE ok thank you sir

[@rounaksarkar528]

Wonderful concept sir

[@balancebreaker8308]

We love you sir!(God of physics)

[@suvanshnarang7661]

Amazing teacher

[@rajanihatti]

Sir how would we solve this question with respect to Ground frame?

[@PHYSICSSIRJEE]

Please kindly, if possible, watch the video completely. Lots of stuff to learn and think about🙂 Explanation for your point is indirectly done at 5:14

[@rajanihatti]

@@PHYSICSSIRJEE Sir I actually went through the video thoroughly and I understood your point. I also read the unsteady flow portion from the Munson Rothmeyer book as well. It stated that solving the unsteady flow problem was out of the book’s scope. Hence I asked whether you could how to solve without changing the frame of reference to the submarine. Also thank you sir replying on an old video

[@modernphysics7474]

Thank you sir 🙏🏻🙏🏻🙏🏻 🙃

[@satyacreater5354]

🔥🔥🔥🔥🔥🔥

[@akashkaul1923]

Even the air at windows was rotatory pressure outside of car was high sir??

[@Bhooshan_Jape]

At 7:04 which book were you referring to ?

[@PHYSICSSIRJEE]

This one 👇 www.amazon.in/dp/1118116135/ref=cm_sw_r_cp_apa_glt_fabc_6BBSH128FY2G5KHTX014

[@Bhooshan_Jape]

You are taking up those debated topics which even mech janatha of iitm avoids !!great work

[@GOAT1906gfg]

6:51 sir can you please tell the name of book ?

[@udaychauhan395]

AWESOME EXPLAINATION

[@gouravbanerjee6032]

7:08, sir i had already commented on that video a long time ago, regarding some key point which was missing in that video, i think if you would have followed that comment, it would have saved you some time while preparing for this video. Besides, i was also expecting that you would discuss the applicability of continuity eq.n in the different reference frames (ground and train). I hope you should give a thought on this, it will enrich you. otherwise 👍👍👍

[@PHYSICSSIRJEE]

Continuity equation is based on mass conservation . Here it takes an easy form w.r.t train . I had to take care of length of the video , so had to skip that in ground frame. We will surely address it in a future video

[@PHYSICSSIRJEE]

Btw , I missed your comment on the old video . I have now replied there 🙂👍🏼

[@vedarthbhawsar4286]

Thank you sir jee😃😃

[@sohansingh2022]

Some people can even kill you with happiness 💕

[@dmgdmg3415]

16:39 sir plz explain how the 1.6 × t term comes on RHS

[@poonamchahar3623]

Same problem bro its not area × thickness it does not makes any sense to multiply volume by strength.

[@as.if_0077]

Thank you sir

[@SachinKumar-cd1sg]

Sir then how roof of a room blown away in wind if we can't apply Bernoulli between top of roof and inside room????

[@PHYSICSSIRJEE]

Open room or closed room , Bernoulli applicable or not , it's fundamentally ∆P that ensures blowing away of roof

[@SachinKumar-cd1sg]

Sir how that ∆p is created between top of roof and inside room?????

[@SachinKumar-cd1sg]

Sir please reply 🙏🙏🙏

[@eshh183]

Sir please leave the answers to all the practice problems in the first comment. That way we can atleast confirm our answers, and check if we understood the concept. This is specially helpful while refering past videos of the channel, for you won't be able to confirm answer for them now

[@PHYSICSSIRJEE]

Usually, I like or pin the correct students' responses in comments section . You may check 👍🏼

[@eshh183]

@@PHYSICSSIRJEE Ok sir. Thank you

[@gamobytes9189]

Sir can you plz name the book from which you took the submarine moving under water problem to describe unsteady flow

[@PHYSICSSIRJEE]

This one 👇 www.amazon.in/dp/1118116135/ref=cm_sw_r_cp_apa_glt_fabc_6BBSH128FY2G5KHTX014

[@gamobytes9189]

@@PHYSICSSIRJEE Thank you very much Sir❤️

[@jeeenthusiast]

Sir Another Amazingg video!!!🤩🤩. But I have a very silly doubt in Practice Problem-1😬.. If we consider the FBD of the glass, we will have ∆P×(Projected area)=m(a).. Since the car is moving with a constant velocity a=0. Hence Pout=Pin.. But there is something wrong here. Can you please tell my mistake sir

[@PHYSICSSIRJEE]

There is force from fitting of glass to frame. You can't write that . Pressure inside a closed car can be anything maintained

[@jeeenthusiast]

@@PHYSICSSIRJEE thank you sir!!🤩

[@shashanks6840]

Sir here if the train tunnel was not tube shaped but cone shaped we could nt apply Bernoulli theorem na sir in trains frame ?

[@shivasudhan165]

Sir at 7:03 why aren’t we considering potential head for point 2 while writing Bernoulli equation in submarine frame

[@PHYSICSSIRJEE]

Already answered below in comments . Density of air is very small , so pgh term for the dimensions of the train is negligible in comparison to other two terms of Bernoulli's equation

[@shivasudhan165]

@@PHYSICSSIRJEE oh okay sir👍

[@aryamansingh5715]

sir at 16:34 cant we do like F=Ro*A*v^2 and also Fmax/t*(side length)= shear stress and equate them....by this am getting answer as B and C.... thank u soo mch for this video...almost forgot about rotational and irrotational flow

[@PHYSICSSIRJEE]

Your formula is correct for air hitting normally on the window , not here

[@nimitjain8163]

17:06 sir i am getting answer as AD, which i have checked from the comment section is the correct answer. But I am not sure whether my approach is correct or not. I solved this question by applying Bernoulli's equation in frame rotating about the axis, using the approach you shared in one of your other videos. the equation which I made was *P0-(rho)w^2(L/2)^2/2=P0-(rho)w^2L^2/2+ (rho)V^2/2* can you please confirm sir if this equation is correct? I am confused because my teacher while teaching this topic gave us a similar question in which he put pressure at point P1 and P2 to be different, and applied Bernoulli's equation, and he calculated the pressure difference by equating it to centripetal force on center of mass. Isn't this approach wrong even though it gives correct answer?? shouldn't the pressures at 1 and 2 be same as they are both open to atmosphere?

[@ankurkhetan9799]

In the original problem of JEE, we could relate the velocities of air at far away point and at nearby point(in train frame) using equation of continuity. How can we get the velocity of air(in car frame) at nearby point in practice problem 1?

[@amiyancandol4499]

Well i solved the problem myself, but I still feel there is something missing in my logic.. also i didn't get what the pressure inside the train had to do with this as i applied the Bernoulli's equation b/w the front of the train and sides.. not completely satisfied but eagerly waiting for the premiere to unfold this one 😋

[@dhruvmisra8010]

Same

[@dishakayande3997]

yeah same

[@harshitmishra7138]

hey dude, how was the exam?

[@amiyancandol4499]

@@harshitmishra7138 what do you think 🙃

[@harshitmishra7138]

@@amiyancandol4499 i am a JEE2022 aspirant actually so was asking how was it for you...ive heard you cleared kvpy sx so...also i tried to solve few questions from the paper...i took up maths paper 2 first and tried Q.3 and Q.4 first...they seemed easy...i know there is a lot of difference solving at home and solving during the actual exam....but how was it for you tho?

[@riddheshpatil7598]

Sir is the answerkey given wrong for this question?

[@PHYSICSSIRJEE]

No

[@ayushikhandelwal89]

Sir Can you please explain why flow is steady wrt submarine ( in the first example) when submarine attack a particular pt. then will not it's speed change wrt submarine

[@amiyancandol4499]

Then even if the speed changes it's fine because at different time particle will not be at the same place, it will move and take different area of cross section

[@poonamchahar3623]

16:40 sir what is this 1.6 × t

[@PHYSICSSIRJEE]

Another mistake, I think it should have 0.4

[@lazysumit]

12 :50 sir, if we consider another point D beneath the car ,then we can’t apply Bernoulli between point B and point D ,as velocities of these points will be different ,so it is a rotational flow ,now consider two points in front of car E and F which are more or less identical ,then a streamline goes from E to B (top of car) and another streamline goes from F to D(beneath the car ) ,now I can apply Bernoulli between E and B and also between F and D ,as they are on same streamline ,as point E and F are identical ,then indirectly we have applied Bernoulli between B and D ,which we shouldn’t have applied bcoz it is a rotational flow ,then sir how are we getting the same result as if fluid was irrotational,please help

[@ABC-tc8rl]

Sir why did you not account for the height factor while applying bernoulli qequation or you assumed that points 1 and 2 are at same straight line approximately

[@PHYSICSSIRJEE]

Height or dimensions of train are not mentioned in problem, hence not considered. Practically also , pgh term will be very small in comparison to 1/2pv^2 for usual speeds of train ( p = density of air )

[@ABC-tc8rl]

@@PHYSICSSIRJEE ok sir thankyou so much for replying and also thanks for such a great explanation

[@saivinayakakkaldevi2746]

vere level sir

[@riitk69]

Sir do you also mean to say that inside train pressure will be equal to atmospheric pressure as ...

[@PHYSICSSIRJEE]

I didn't mean it . It was mentioned in the question. It's not a result of Bernoulli's equation. It might be maintained by some ventilator or air conditioner inside

[@riitk69]

@@PHYSICSSIRJEE ok sir ❤❤❤

[@riitk69]

Actually I didn't knew what ambient pressure means

[@PHYSICSSIRJEE]

@@riitk69 now you know 😉🙌

[@riitk69]

@@PHYSICSSIRJEE yes sir ❤❤❤

[@riddheshpatil7598]

Sir what is the answer of sliding rod problem posted by walter lewin sir?

[@PHYSICSSIRJEE]

It will loose contact at particular height h only . Where h/H is fixed fraction . H is initial height . I don't want to spoil the question by revealing exact answer here 🙂

[@riddheshpatil7598]

@@PHYSICSSIRJEE ok sir can you please tell where the question formal wording is given so I can understand the ques properly?

[@PHYSICSSIRJEE]

@@riddheshpatil7598 David Morin, I don't remember the page number

[@riddheshpatil7598]

@@PHYSICSSIRJEE No issue sir I will find it out.Thank yOU for quick reply

[@saravananb733]

sir the solutions of practice problem 2 you didnt give please give that sir ......and sir one more thing when will the video solution of all the practice problems come ..im waiting since so long please help

[@MayankSingh-pw3jv]

# Jee Advance 2023

[@PHYSICSSIRJEE]

#jeeadvanced2023 , like this 🙂

[@MayankSingh-pw3jv]

​@@PHYSICSSIRJEEAlready liked Sir🤞

[@balak2212]

Why you didn't used ro×g×h in bernoulli's equation

[@anantgokhale8990]

Sir, in the first AITS problem could you please explain the term-- (sigma)x(1.6)t? What is 1.6?? And Sir why is the shearing strength given, if a longitudinal force is going to act on the window..Also does shearing strength mean it is the shear modulus? Thank you for this wonderful video SIR!!

[@suvenjagtiani6834]

1.6 is the perimeter. Basically, 1.6*t represents area of the side strip of the window.

[@gouharmaquboolnitp]

400 likes over 0 dislike It might be the best outcome sir! Edit: after one month still 0 over 868 likes op

[@sakshampaliwal8170]

400 th like is mine 😊

[@sakshampaliwal8170]

@harshit gupta kvpy copyright XD

[@puspalpaul185]

@harshit gupta kvpy you both are very down to earth bruhs ..... proud to be ur friend

[@puspalpaul185]

@harshit gupta kvpy tumlog ka level hi alag he ..... tumhare jaisa koi to iss time pr online bhi nhi he 😂😂😂.... msg krre to ignore mardeta..... Thats why

[@Vamsivamsi-we2ev]

For next video plz give telegram linc sir in description box ,previous linc has been expired. Hopefully waiting for next video and also for discord

[@vxs12]

sir i am really anxious I worked hard over the past 2 yrs and im sure i can do well in all levels of paper other than 2020. In the 2020 paper i was unfamiliar with so many concepts. What can I do about this sir now that only one month is left?

[@percyyay980]

Op video sir.. 💙🌸 Begumpet ameerpet ma janardhan sir very great.. 🤩🙏

[@PHYSICSSIRJEE]

😂

[@prahladtiwari8483]

Sir to find pressure at the stagnation point (2) in the STANDARD Example You Took, why p2=1/2(rho)v1^2+(rho)gh why is it not p2=1/2(rho)v1^2+(rho)gh+p0 What I mean is why don't we add atmospheric pressure in the RHS of the final expression? So my answer is coming (Po+518)kPa I don't think the Po terms will get cancelled both the sides bcoz P1=Po+(rho(gh)) and pressure at point 2 is asked ,,,, which should be the net pressure on point 2

[@saravananb733]

Sir where is the solutions of Practice Problem 1 and 2 unable to find please give

[@anubhavsrivastava4906]

Sir in my opinion they should also mention that speed of 🚆 is high because there is difference in average height between two sections of fluids which leads to ( density) ×g×∆h . Obviously if speed is high enough this term becomes humble against (density) v^2 like terms

[@PHYSICSSIRJEE]

With rho of air = 1.3 SI units , gravity term is negligible

[@anubhavsrivastava4906]

But sir that (rho) appears in 1/2(rho)v^2 term too; so it can be comparable to (rho)×g×h depending on speed... And yes thanks for this amazing video!

[@PHYSICSSIRJEE]

@@anubhavsrivastava4906 yeah , usually trains do travel at high speeds anyways. Also when dimensions of train is not mentioned , it's a hint to ignore h

[@anubhavsrivastava4906]

@@PHYSICSSIRJEE They indeed travel at high speed inside a tunnel 😅... Thanks sir🙏🙏

[@vishrutmittal4117]

if a button exists for million likes ....i would click it for this video

[@AG-fv6ts]

Can we say that the fluid is not the same. Hence B.T can not be applied between the two mentioned points , one in the above air and one inside the car?

[@PHYSICSSIRJEE]

Not same streamlines is better way to argue

[@abhijeetjain2252]

Sir can u pls suggest some good book on fluid mechanics to cover such concepts in depth

[@PHYSICSSIRJEE]

Irving H shames , not all of it

[@abhijeetjain2252]

@@PHYSICSSIRJEE ok sir thanks

[@abhijeetjain2252]

@@PHYSICSSIRJEE sir which parts of the book should I study for jee , olympiads

[@PHYSICSSIRJEE]

@@abhijeetjain2252 depends on your teacher / mentor. My advice is to go through contents and choose a subtopic and start

[@abhijeetjain2252]

@@PHYSICSSIRJEE sir is its pdf avaliable ? , I tried but couldn't find

[@prometheus3899]

Can anyone explain why 1.6t

[@freefiregaming5284]

#jee advance 2023

[@sunritroykarmakar4406]

hyped

[@vilasjadhao730]

🙏❤️❤️