Fluid 12 || Surface Tension 04 || Capillary Action and Capillary Rise IIT JEE MAINS / NEET ||
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Fluid 09 || SURFACE TENSION 01 : Introduction and Surface Energy IIT JEE MAINS / NEET ||
• Fluid 09 || SURFACE TE...
Fluid 10 || Surface Tension 02 || Excess Pressure inside a Liquid Drop IIT JEE MAINS / NEET ||
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Fluid 11 || Surface Tension 03 || CONTACT ANGLE and Shape of Meniscus IIT JEE MAINS / NEET
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Class 11 chap 10 | MECHANICAL PROPERTIES OF FLUIDS 01 | Introduction : Pressure in a Fluid JEE/NEET
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2)Live Classes and recorded Video Lectures (New, different from those on TH-cam)
3)PDF Notes of each class.
4)DPP: Daily Practice Problems with each class having 10 questions based on the class of JEE Mains/NEET level.
5)Syllabus Completion by end of January, 2021 with topicwise discussion of Last 10 Years Problems in Boards, JEE Mains/NEET within Lecture.
6)The Complete Course (Video Lectures, PDF Notes, any other Study Material) will be accessible to all the students untill JEE Mains & NEET 2021 (nearly May 2021)
7)In case you missed a live class, you can see its recording.
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9)Each chapter will be discussed in detail with all concepts and numericals
10)Chapterwise Approach towards JEE Mains/ NEET & Board Exams.
****Test Series for XI & XII****
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The test series follows very logical sequence of Basic to Advance questions.&
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Fluid 12 || Surface Tension 04 || Capillary Action and Capillary Rise IIT JEE MAINS / NEET ||
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Sir i m from dhoomanganj
Shayad Mile kabhi
SIR, plz complete the video
Super sir👌👌👌💐💐💐
Sir please complete the last line
Tube of insufficient length waali part complete nahi ho paayi hai. Sir please check it.☺
Last lines of this lecture are : Liquid will rise to the top and change it's meniscus and contact angle , contact angle will start becoming equal to 90°. These are the lines as written by alakh sir in his handwritten notes. So I have written here so as to help U guys....Thanks a million alakh sir...♥️♥️
thanks a lot
🙏🙏🙏
contact angle will not change but meniscus will get flatened as contact angle depends on liquid and solid not their heights.
Thanks bhai 🙏🙏🙏🙏🙏☺🙏🙏🙏
@@deepalimangulle7805 bs fir yaha pe khtm na fluid mechanics?
The liquid will rise , and will change its meniscus and finally the miniscus will become flat and the water will stop rising..
Hope it helps/
:)
Thanks for completing the sentence
But hope it was right
Thanks bro
R u a fan of harry Potter 😄me tooooo😄😃😀
However thanks 😏
Timestamps
Capillary Action Introduction for two cases of Contact Angle - 1:10
Formula for Height of Capillary Rise - 3:08
Formula Derivation - 4:43
Explanation of "How considered angle in formula is equal to the contact angle" - 15:45
Reason why capillary rise or action occurs - 21:01
Q1 - 26:14
Q2 - 28:36
JEE Advanced 2014 Q about Truncated Cone - 35:18
Derivation of Capillary Rise Height formula by Conservation of Forces - 45:54
Case of Bent Tube - 57:12
Case of Insufficient Length of Tube - 1:00:50
Remaining Lecture --> " Liquid rises to the top and change in meniscus occurs such that the contact angle becomes equal to 90°, i.e., meniscus becomes flat, this causes water to stop rising at the top."
❤❤❤❤
10:00
Jazakallah khair sister ❤❤❤
thank you lil bro
45-50 mins Sir's Dance 🕺👯😅😅
Congratulation to all who have done all lectures of fluid . BEST OF LUCK.
Me
Tq nd Same to u
Me
Ho gaya 💥!
Is the second derivation required ..I am gonna skip it..;)
Sir video pura nhi hua h if anyone agree then like it to make this comment highlighted to sir
ha last me video lagta hai record hona band ho gaya
Pta ni kya hua but isse phli wali vedio m bhi yhi hua tha koi problm hui thi but concept toh pura hua hi nhi ab ?? ?
Koi nahi notes sa padh lo
@@shivanshujajor1330 from where we can get notes?
It will adjust the radius of meniscus such that Rh will remain constant
UP NEXT : IUPAC Nomenclature 11 : Last video of this topic : Bicyclo and Spiro compound naming.. tonight
Sir GOC ka v please 🙏🙏
Bravo
Sir, hydrogen chahiye..... Exams mein aa raha hai abhi.....
Sir math ka koi solution btaiye please reply sir
Thank you sir IUPAC ki bahut jaroorat h mujhe
Salute to this legend who made physics and chemistry of 11th and 12th look so easy....
Who else agree with me?!! 🔥🔥🔥🔥
Plazma chazer, only 11th not 12 .sir will start course of 12th class next year
@@name8166 bro im In my drop year and I can relate how much his class 11 concepts are helping me in understanding class 12th concepts :)
Me
Bhai kya sir 12th ka bhi pdhayenge
No Doubt
Reason (based on sir's teachings) for this video's last wrods:- “Liquid will rise to the top and change it's meniscus and contact angle, contact angle will start becoming equal to 90°.” When a liquid rises in a capillary tube the surface tension between solid-liquid comes from molecules of solid that are just above the level of the liquid molecules so that when they attract each other the liquid molecules are pulled upwards. So when the water reaches the top there's no solid molecules above the liquid level, hence there will be no force acting upwards. Hope this helps 🙂
remaining lecture=When length of tube is less than the height of capillary rise, the liquid molecules on reaching top of the capillary come into contact with horizontal surface of the tube. The surface tension becomes horizontal. There is no vertical force to pull the liquid up and it stops risi
Correct brother
Thanks
Thanks bro
No it's not as the water now forms a bubble like structure having higher radius of curvature given by the r'h'=rh
Will the water overflow if height come very large than length of tube?
Oh my god , I don't know how but I solved that JEE advanced question just bcoz of this legend .. salute man....
Yes 😁
Good😁 keep it up
Alakh sir the best of best teacher 😁😁🇮🇳🙏
@@foreverandalways6489 😁😁😁
Sir give this comment answer at 2:13 in this videoth-cam.com/video/oT6sVJszh2E/w-d-xo.html
@@foreverandalways6489 th-cam.com/video/oT6sVJszh2E/w-d-xo.html
Capillary Action Introduction for two cases of Contact Angle - 1:10
Formula for Height of Capillary Rise - 3:08
Formula Derivation - 4:43
Explanation of "How considered angle in formula is equal to the contact angle" - 15:45
Reason why capillary rise or action occurs - 21:01
Q1 - 26:14
Q2 - 28:36
JEE Advanced 2014 Q about Truncated Cone - 35:18
Derivation of Capillary Rise Height formula by Conservation of Forces - 45:54
Case of Bent Tube - 57:12
Case of Insufficient Length of Tube - 1:00:50
Remaining Lecture --> " Liquid rises to the top and change in meniscus occurs such that the contact angle becomes equal to 90°, i.e., meniscus becomes flat, this causes water to stop rising at the top."
I was never understood why liquid rises in a capillary tube when I was 11th.
But u made it quite easy I am regretting why I didn't know about this channel at that time...😐
Understood this topic at allen solved all pyq's...
but still here at 5 year old videos to feel the concept why water rises in capillary, truly sir you are awesome ✨✨
Sir, aaj bhi aapke lectures hamare kaam aa rahe hai... Dil se shukriya sir 🙇♂️
I m in 10th prep for jee any suggestions if you have given jee
Liquid will rise to the top & change it's meniscus radius to a new radius given by R=hr/h' but liquid will not over flow
With due respect, one suggestion Sir.....
Please rectify the insufficient length capillary tube concept.
You are really doing a great job for the JEE & NEET aspirants.
God bless you.
Bro hamare 12th boards aaur neet ke syllabus ke liye itna kafi hai....if ur dissatisfied with sir u should go through wikeipedia for infinite source of knowledge 🙄
@@killerguy8802 bhai woh last wala part ke baat kar rhe hai woh sentence bhi mil jaye toh kahi hai aisa
Lecture's last lines for those who need it....
*Liquid will rise to the top and change it's miniscus and contact angle. Contact angle will start becoming equal to 90°.*
Beauty 📛📛
The whole playlist of fluids is awesome, sir. Thanks a lot!!!
Finally last video. How many of you seen all 12 videos?
Me ❤
I wish we had teachers like you in school,life would be so much easier
Yess its very rightly said 👍👍
Haa bhai ..sahi kaha agr hamare paas aese teacher hote to hame TH-cam se padhne ki jarurat hi nhi padti
Sir.....thode concept chut gaye jyese ki Reynolds number, poiseuille's theorem, critical velocity. Pls sir ise bi include kijye.
Yes
Sl arrora krna bnd krde hc verma pe a ke dikha
@@santoshkumarsahu9928 bro ,maybe you should go through NCERT once
Bhai jo padha hai wo yad hai khya
Santosh Kumar sahu SL arora is not bad...and hc verma itni bhi hard nhi agar concept ache se aata ho...
Glad to be in all lectures of fluid mechanics.
And thnx sir to play such a great role in every aspect.
Thnx very much.
the way he explained how the liquid rises in a capillary tube is just awesome.23:30
In this case liquid will rise to the top and change its meniscus and contact angle. The contact angle will start becoming equal to 90 degree.
Hope it helps. Thank you🙏💕
Thanks a lot
Thnks🙂
Hiii
please ,complete the statement given in the last moment -liquid will...............and change its mensicus.
then liquid will rise to the top and change its meniscus
Then the liquid will rise to the top and start changing its contact angle....
That is the shape of its miniscus....
*Contact angle will start becoming equal to 90°*
Hope now it will be clear before you....
**Search for detailed explanation in my other coments ...👇👇👇👇
@@ayushjain8781 Thanks buddy!!!
@@ayushjain8781 thanks..bt will the liquid overflow?pls explain
@@ayushjain8781 why?
The contact angle for pure water and clean glass surface is 0°.. Alakh sir made a small mistake in the previous lecture. The meniscus for pure water and clean glass is exactly a hemisphere, therefore radius of the hemisphere = the radius of tube and the contact angle is 0°
But sir ne diagram bnaya tha uss hissab se toh 90 hi ban rha tha???
What is correct now 90 or 0 degree
You are mistake vai sab
Thanks bro
Sahi he
Last part:
The radius of curvature of its meniscus increases to a value R'
So that R'h'=Rh.
Note that contact angle remains constant as it is property of liquid
And if we further reduce length of tube then at h'=0 radius of meniscus becomes infinite due to which liquid becomes flat
Source : cengage
Hope it helps
Thanks for completing...was searching for a comment that justifies why the contact angle would not change.
Last line: Liquid will rise to the top and change its meniscus in such a way that the product of h and R(radius of meniscus) remains constant and liquid never overflows.
h=2T/R¶g
implies hR=2T/¶g = constant
implies hR = constant
implies R is inversely proportional to h.
Thanks
If I had a teacher like you earlier then my life would be on a different note
The angle of contact and hence the radius of meniscus change to as to rise the liquid to a suitable height such that force because of surface tension equals weight of columns.
Sir thumbnail mai 1hr:11min ki vdo hai but actual play mai 1hr:4min ki vdo hai🤔
ya😂😂🤣🤣👍
Kyabat ha bada notice kra ha isbat ko 😂😂😂🤣
@@aashnagoyal3516 isme notice karne ki kya baat hai clearly dikh rha hai😂
Are haa
Sayad sir ko jaldi hoga .bhagne ki😂
This is one such guru who can without using any ppt or object can give u the EXACT FEEL of what he is explaining......RESPECT 🙌
For tube of insufficient length: radius of meniscus will b changed.
h1R1=h2R2..
h1 is original height from liquid surface, R1 is original radius of meniscus, h2 is new height/length from liquid surface and R2 is new radius of meniscus.
This man should be given a Bharat Ratna for his evergreen teaching style and contribution to students’ life
1:40 sir we only write contact angle then also your video will come on top👍
Sir redox reaction mai electrochemistry, titration rah gaya h . Plzz complete redox reaction please please please please please
Gaurav Jain
Haan sir...plzzz iska bhi lecture daaldo
Plz redox complete karo sir
After 4 years your videos are the best than all others .💓💓💓💓💓
Yes ❤❤love this
Liquid will rise to the top and change it meniscus and contact angle, contact angle will start becoming equal to 90°......
No, it won't overflow. That should be obvious since doing so would create a constant flow, constantly using energy, but without any energy input. Put another way, that would be a perpetual motion machine, one you could actually extract free power from.
The same force that pulls the water along the inside of the capillary tube also holds it there when it reaches the end. This force doesn't just pull upward, it pulls the water along the glass. At a certain height, the weight of the water column ballances this pull. In that case the pull is upward since there is water below but not above.
In your case, there is nothing to pull the water column higher when it reaches the end of the tube, so it just stays there. The pull only exists at the boundary between water and not-water. The bulk of the water in the tube isn't being pulled any particular way.
Credits- Olin Lathrop (Physics Stack Exchange)
I solved jee advance question myself in 1st time...just bcause of The Great Alak Sir
JEE 2014 ka woh question mast tha...all concepts gets cleared and you gain confidence when you Crack up that advanced level question...brilliant explanation....thank you sir
Hi are you in class 11
26:40 for pure water contact angle is 90°( so h=0)
Yes exactly
Mein v wahi soch rhi thi
I think the reason for water not being in the form of fountain in case of a tube of insufficient length might be due to...when water reaches the top of the tube, then the miniscus will become relatively flatter due to no further glass tube to pull it upwards through surface tension(as sir did in the second method of derivation), and if the miniscus will become relatively flatter, then the miniscus radius will increase, and according to the equation 2S=R rho gh, if R will increase, so h will have to decrease in order to maintain the equation, hence liquid will not flow out, another way to understand is that if radius of miniscus will increase, so pressure just below miniscus will increase as pressure just below miniscus was Po-2S/R, so liquid would not have to rise much higher in order to maintain equal pressures at junction of tube and liquid surface and at the points on the liquid surface at same level, hence h will not increase much....hope it somewhat helps, and sorry if there’s any mistake in my explanation🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻
But the formula is 2S=R*rho *g*h. There's something wrong in your formula.
@@Lucky_malvika_rai Yes you are right, sorry for it, I've edited it
If the length of the capillary tube is shortened (insufficient height) then the meniscus will change. The new meniscus radius will be greater than the previous one.
H=2Scos0/rPg
Hr=2Scos0/Pg
Hr=constant
Hr=H'r' (new radius and new height)
new radius , r' = Hr/H'
*** ( r' > r )
The liquid will rise to the top but not overflow.
💙💚💛💜 Pranam sir . Aap dhanya ho aur aapke mata pita apse v zayada dhanya h jinhone aapko janm diya.💙💚💛💜
32:50
Sir you told in Surface Tension #3 Physics Wallah Video that pure water has angle of contact = 90°, then why in this question and in the previous question, you are using angle of contact for the pure water = 0°?
Angle of contact between silver and water is 90
Here is one more legend.... Best discovery on TH-cam..we must promote good trs
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Yeah bro I also searched your answer for my doubt
Sir 26:45 theta 90 degree hoga na pure water ke liye
The water will never overflow as radius of curvature adjusts itself such that the required H becomes less, meaning ---> H=2S/PgR where R is radius of curvature... if H is very HIGH, then to lower it R will become lesser making the fluid less rounder and it will eventually become flat...
but if R will become lesser than won't H will increase more? As H is inversely proportional to R ..
25:00 Hats off logic 😍
I think this might help for the last statement.
By intuition it may seem that the liquid overflows but it doesn't.
If it overflows it would perform constant work by creating a flow of water without any energy input which is not at all possible.
The force which pulls the fluid up is due to the adhesive and cohesive forces at the molecular level. The fluid is actually pulled along the walls of capillary tube. So once the fluid reaches the end of the tube there is no force to pull it further and it stays there in equilibrium.
the value of θ (angle of contac) keeps changing untill the equation balances out.
ie. the meniscus of the liquid becomes more convex until it attains equilibrium
LIQUID WILL RISE TO THE TOP AND CHANGE ITS MENISCUS AND CONTACT ANGLE WILL START BECOMING EQUAL TO 90 DEGREE
Thanks a lot easy peasy:-)
most intellegent and brillient teacher ever i observed
Finally complete this chapter 😀
Alag hi khushi h after 12 lectures I complete this without any Doubt 😀😀😀😀😀😀
So much love and respect to u sir ❤️
Yeah all doubts are crystal clear ….all thanks to alakh sir 💛💛
sir you doing great job .
through you all type of students can study
and mostly poor students who do not have money to afford coaching ..!!
thank you so much sir ..!!
oye tu toh cricket ni khelta😂😂
@@RidhimaThakur hi
@@dilipmishra778gmail hello
It's 6 o'clock in the morng... And finally I m completing this ch in 2 days... Thnk uhh alakh sir for ur evergreen lectures... These r still helpful for us after so many years...
At 1:04:09 liquid will change it's miniscus.......... ??? Sir comment m hi aage ka sentence bata do... 🤔🤔
@Himanshu jha 😆
@Himanshu jha acha...
check in notes
Contact angle will become 90 degree
Maybe radius of meniscus
Sir aaj apke karan hi hamara physics me concept clear rehta hai. Phele hum class me dosto ke dwara diye gaye numerical ko nahi kar pata tha but ab jo bhi numerical dete hai mughe me pura complete kar ke de deta hu.sir your are great legend.💯💯🧔🧔
One book
One pen
One child
One teacher
Can change the world 🙏🙏
Pen ki ink khatam and book khatam ho gai to??🤣
U should write many books and many pens👍🤣🤣🤣
@@neerajchoprarealid3935 New kharid lenge 😂😂
Only 1 child and teacher is valid rest isnt :))
Pen toh ham Parkour gold khareedte hai :)
Ma sir ki har video ko 4-5 times dakhta hu jisay sir ki videos ko jaldi sa 1Million+ views mill jaye aur sir ki mahnet rang laye 😎
Sir you are so great 👍👍👍👏👏
Real time Mai dekhte ho ya skip kr k
King of concept 🔥❤️
I'm from aakash prayagraj and i never understood this entire chapter but just because of you this chapter is now a piece of cake for me......thank you so much sir 🥰🥰❤️❤️❤️❤️
I am from Aakash Noida .... Same for me
I am from aakash faridabad and also same for me
@@sumitchauhan3702bro r u from sector 16 faridabad branch
34:20 Sir, P(atm) kam hai isilye P(atm) - hpg ki value - ve aa rhi hai,iska matlb toh yeh hona chaiye na ki water ke surface ke aur andar humne point liya hai, kyunki water ki surface par pressure 'equal to' P(atm) ho jata hai, usse zyada hone ke liye hume aur andar jana hoga,.... plz correct me if I am lagging in concept🙏
Unimaginable strategy to give us feel of ‘Why Capillary?’. Mind blowing feelings of how the mathematical derivation came from.
Best concept of capillary , must watch . Salute alak sir
Really amazing sir .... In very beautifully way u gave us concept of fluid ... All concepts of fluid are crystal clear .. Thanks a lot with too much love ..... Hats off sir ... I had scared from this chapter earlier ... Now its my favourite . 😍🙂😃🙃
Sir, aap bahut great ho...aapki wajahse hi mere physics ke sare concept clear ho jate he... You are 😇🙏👼God....
Me too
Alakh sir's old videos are truly gold.....💡
Even after four yrs still alakh sirs teaching is a master piece
40 views 75 likes power of physics wallah....
But how
@@swadhinsangramsahoo7165 Because views get updated in an hour and likes get updated in real time .
WWE Thanks t#Manutalk MOTIVATION कॉन्फिडेंस यह नहीं है कि लोग आपको पसंद करेंगे ही, कॉन्फिडेंस यह है कि जब वो पसंद ना भी करें, तब भी आप ठीक हो।

हर छोटा बदलाव बड़ी कामयाबी का हिस्सा होता है।

जो आसानी से मिल जाता है वो हमेशा तक नहीं रहता, जो हमेशा तक रहता है वो आसानी से नहीं मिलता
Because TH-cam algorithm is broken
Bhagat mt bano
Sir mujhe nehi lakta ki apse a66a physics or chemistry teacher India mea koi or hea...sir kasamse bohot a66a parhate ho.👍🙏🙏🙏🙏😊😊😊😊
sir for pure water contact angle is 90 degree in 33:44
Thanku so much sir.. 🙏🙏Your way of teaching is so asum that we love to study and we can feel the topics....
Hi are you in class 11
Nice lecture
Sir please make videos on SIMPLE HARMONIC MOTION
Banya hay sir ne
@@prakharsingh3042 2 saal purani comment hai bro😂
Sir. The last video stopped suddenly. So I wanna know what happens in that situation
At 32:52 apne btaya pure water k liy theta 0 hota h but sr pichle lecture me apne btaya tha ki pure water k liy contact angle 90 degree hota h .. please tell kya hota
For pure water and perfectly clean glass, the angle of contact is 0°. For ordinary water and glass, it lies between 8° and 18°. For pure water and pure silver, the angle of contact is 90°. When pure water is put in pure silver vessel, the surface of water is flat.
Coaching me padhaya huva kuch nahi samjha tha ....lekin sir Apke vajah se pure concepts clear hogaye, Thankyou sir😀😊
Alhamdulillah
Sahi baat
Small trick is that make your conical flask straight by adding alpha/2
So formula becomes theta+alpha/2
Revision DONE#2😊👏
Sir ji, aap chha gaye. very soon above 10 million subscribers.
Yes sir you can do explain all the things clearly
And can clear all our doubts
At 26:11 boom nd concept is now crystal clear sir ur great I just imagined this nd ye like feel hua 😂😂🌼🌹♥️thanks sir
26:45 ...for pure water, angle of contact should be 90° ?
Yes.. I too don't know how sir wrote 0 degree... If you know why sir wroter 0 plz tell me
Correct contact angle is 0° only,......90°🤔🤔
*Man me Hain vishwas pandey ji Hain sath* 😊
Hm hoonge kamyaab ek din
Under score aur smiley ke beech mein space de....tabhi italic hoga
@@capturexproductions5958 hehe
_hehe_
@@capturexproductions5958 _lol_
Liquid will rise to the top and change its meniscus and increases its radius of curvature so that the product of height and Radius of meniscus becomes constant as hR = 2S/rho g which is constant and liquid will not fall out of tube!!!
Liquid will rise to the top and change its meniscus and change its contact angle,and contact angle will start to become 90°
This man is a real artist who paints physics and chemistry so beautifully that one cannot stop him or herself from falling in love with these two subjects .........infinite hat offs sir ....u r a true legend and inspiration to all .Love you 3000 hamara iron man of physics and chemistry and loads n tonns of respect from my end .
You cannot love physics untill you learn mathematics
Sir angle of pure water is 90 degrees you had said in previous video but in this video you said it is 0 degrees
Zero degree is the correct one.
@@tanmaymore3645 but pure water is flat na.. So h=0 ,then howcome cos(theta)=0 ??
34:10 θ ki value zero hai fir to woh concave. Convex kuch rha hi nhi to fir 2s/R pressure kum karne ki zaroorat hi nhi thi
Edit: someone please clear my doubt
Agar theta ki value 0 degree hai toh concave mensicus hoga
I think 0 degree ko tum 90 degree se confuse kar rahe ho
In case of 90 degree flat surface hoga (i.e. no concave-convex)
In case of 0 degree semicircular concave mensicus hoga
Incase if u r confused still then draw a semicircular concave mensicus and then draw two tangents and measure the angle it will be 0 degree
Therefore 2s/r pressure kum Karna zaroori hai
2S÷Pg=hR
And S P g are constant for a given liquid
Therefore if h decrease R will increase
(Here P is rho)
Hope this will help u
And in continuation the meniscus will change it's radius such that 2t/r value becomes equal to (rho) gh and the adhesion and cohesion will have to compensate the change.....
what is the contact angle of pure water ? while explaining contact angle of impure water and mercury u said contact angle of pure water is 90, but while solving a numerical u said that contact angle of pure water is 0
Time line 32:22
Cos 90 =
Yeah vai that's also my question
ans mila kya
Hmm kaise hua kuch pata chala🥲
@@soumyabarik1128 pure water ka contact angle zero hota hai (pure wetting condition) ....actually 8 degrees hota hai lekin questions mein pure water dia jae toh angle 0 lena hota hai
cos0 ka value 1 aata hai toh uske lie h=2S/rpg hota hai
😀😀Bhagwan Aapki har wish poori kare,apko😊 Dher sari khusiyan 😊de sir g, and thanku very😇😇 much for this😃......👏
i enjoyed the whole playlist
thanks physicswallah .
When a capillary tube of insufficient length is dipped in a liquid the radius of curvature of the meniscus increase so that hr = constant. That is pressure on concave side becomes equal to pressure exerted by liquid column so liquid does not overflow.
Hope it helps
if the tube is of insufficient height , the liquid does not overflow. after reaching the top adhesive forces changes and that changes the contact angle and that changes curvature of the surface of liquid . due to this the liqiud stays there and donot come out ....
hope it helps.
or as h/costheta =constant , so if h will decrease costheta will decrease that is theta will increase
Sir hydrogen , S block and p block bhi karwa do December ke paper me ane Hai please
Koi ye clear kr do ki sir ne phle videos m bola tha ki water ka angle 90 hota h but jab question kraye to usme 0 liya contact angle esa kyu?? Agr m kuch glt bola to pls correct me..
Water and glass ke beech me 0 degree angle of contact banta h and water and silver ke beech 90 Ka banta h
bhai yaar same doubt
@@amitkumar0395 thanks👍
Thank you sir because of you I got 96 percentile in jee mains jan🎉🎉🎉🎉❤