Electrostatics | JEE Advanced 2020 Solution | PYQs by Mohit Sir (IIT KGP)
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- Опубликовано: 5 окт 2024
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Completed Bachelors and Masters from IIT Kharagpur. Having an experience of +4 Years in teaching I reckoned the urge within me to help students appreciate the subject by delivering the toughest concept in simplest manner through practical demonstrations and visual aids.
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✅ Part 2 Electrostatics 2019 Solutions - ruclips.net/video/OhVxGCGr6Q4/видео.html
✅ Part 3 Electrostatics 2016-2018 Solutions - ruclips.net/video/ZRNX_h1wbyw/видео.html
✅ Electrostatics Revision Video - ruclips.net/video/3stXbGRMcrk/видео.html
✅JEE Advanced PYQs - bit.ly/2SCybTR
✅JEE Advanced Problem Series - bit.ly/38hJGEj
1st question me 1 St option sahi diya hai muje bhi nahi samaj aya kyo par 1 sahi diya hai iit ne
Sir 1st shi aayega 2nd wrong h net force km hota h force between sphere here meant to be coulambic force that is always same in any medium hope u will reply me .....
@@MohitGupta-xk5nm if the question clearly said that electric force between the spheres due to charge on the sphere remains unchanged, then it would have been correct. But here it says electric force between two spheres (that will also include forces due to induced charge). A lot of debate happened after this question but finally IIT have b as correct.
@@mohitgoenka99 tq sir hr jgh froce remains same ans.de rkha tha hr solving paper m bhi tb m bhi 1saal se confuse tha iska kya krn a h .... due to uncertainity of question thank u bhaiya 🥰💘
Bhaiya 1 option is right na due to principle of superpostion force bw spheres remain unchanged irrespective of medium force jo reduce hoga by the factor of dielectric constant vo net force hai na ki force bw spheres 🙏🙏
Udhar log abhi bhi 2002 ke ques solve karva rahe revision ke naam pe
Vo bhi paid course me
Yaha free me latest questions karva rahe vo bhi itne detail me.
Kya baat hai sir❤️❤️
Thank you 🙏🙏
These are Gold questions and every JEE aspirants deserve quality solution of it
@@mohitgoenka99 truely said sir!!!,,,thank you for all ur efforts
In first ques the electric force will remain same between the spheres but the net electric electric force on each sphere will get reduced so option 1 is correct and second is wrong because they are talking about the electric force between the spheres not individual sphere.
Yes u are correct
Hm bhai tum shi bol rhe ho
Yes u r correct
Correct..😮
After seeing u solve pyq with so only basics..I feel very confident...Great work sir!!
Glad to hear tht dear
I feel so lucky that I found this channel a bit earlier... Jee 2023 aspirant... The most amazing explanation... Loved it
Thanks and welcome
what was your result in 2023?
@@pushkarc28 94 percentile... Dropping for next year
@@ayushlad1520 ok all the best. i will also give in 2024. i am in 12th.
@@pushkarc28 all the very best!
Sir in 1st questions the answer should be ( A and C )......option a is not asking the net electric force which is (f/21) it's asking force between the spheres which remains the same ..... I hope u got my point i matched it with Allen modules too answer is (( a and c ))
Bhai force between the spheres he toh f/21 hai
@@kshitijvispute6792 exactly to unchanged rha n after medium is involved....
@@kshitijvispute6792 well i have to see this question again which I don't want now...
force is given by coulomb's law
F = 1 / (4 pi epsilon) x (q1 q2 / r^2)
epsilon = k epsilon_0
==> F in second case = 1/k x F in first case !!
@@SoI_JEE_NEET_Physics_Math_IITB force between two materials do not depend on the medium in which they are placed. Rather *NET* force depend on dielectric constant. Do not mess net force with force between spheres. ans would be a and x
I was dead scared of jee advanced. After seeing this video, I feel a bit motivated. Thank you sir!
Most welcome dear
Bro what are you doing now
First ques me hi first option glt bta rhe ho sir wo shi hoga kyuki charges ke beech me mutually utn hi force lgega so option (A) will be correct and (B) wrong
@@sk-ms6567 due to dielectric force reduces. air has dielectric equal to 1 and while the medium has 21 according to the question.
@@zwiz0p Bro, mutual electrostatic force between both the charges remains same as in air.
Additional force is experienced by both the charges due to dielectric medium but electrostatic force b/w them remains same.
THANK U SIR !!
JEE ADV 2024!!
ONLY 32 DAYS LEFT !!
all the best
ps: fellow candidate
Hua tera?
did 4 questions myself and in last question couldnt reach till end ....but feeling 10 times more confident now...thank u sir !
Thank You sooo soo Much sir🥺🙏🏻.. Badly needed For electro.... Now I'm feeling relieved 😊
Glad to hear that
lucky to be a part of this channel. i cant express my feelings in words how awesome the lecture is...........feeling confident in last days of jee advanced 2023
How was your exam brother?
Sir you are the best physics teacher I've ever got , sir pehle tak physics mains main to formula raat ke marks le aaya , adv ke question nahi hote the , darr tha ki physics ka cutoff kaise clear hoga , but sir ab to definitely physics main bhi machaunga. Thank You very much sir
I wish Maths aur Chemistry ka bhi aisa hi series ho .
found the advance pyq's sir im very assured and relieved now for post mains.. thanks and love u
All the best
JEE Advanced questions seemed to be very difficult for me. But after seeing all your videos sir, I feel highly motivated with the simple approaches you make. Thankyou a lott!!
Now after watching your pyqs sessions I am feeling bit confident .
Thank you sir for your advice 😊
Offtopic but I love the interface where you solve and your way of representing solutions.
thank you so much dear
Sir Please continue this series for JEE Advanced 2021 & 2022 pyq's too ...
Back here after 6 months 😂
Q1 5:24 7:55 Q2 8:27 12:51 Q3 15:10 18:28 Q4 27:14 Q5 28:21 36:10
thank u sir for such amazing sessions of pyqs discussion.I have no words to say for ur hardwork.
Most welcome dear. Hope it benefits you all.
In first question we can also apply rho=(rho of liq)K/K-1
Where rho=mass density of sphere & K=dielectric constant
Love you sir ❤️ you are helping me a lot in my JEE advanced preparation
Sir at 3:53 in question 1 option a should be right bcz net force is changing not the electrostatic force .....
Sir plz reply🙏🙏
Haan 1st option correct hona chahiye
electrostatic force depends upon medium
@@akxshaaanafk512 its not about olympiads, its the basics, the electric force will remain same between the spheres but the net electric electric force on each sphere will get reduced so option 1 is correct and second is wrong because they are talking about the electric force between the spheres not individual sphere. I hope you will get my point
yess mera bhi woi aaya
7:55 sir option a is correct and b in incorrect
Yaar itna late mila yeh channel😢advance ko sirf 3 din baaki h
No one dared to dislike this masterpiece 🙂🙂
In first ques
Electric force remains same
But net electric force is reduced
The force acc to coulombs law is same
there was quite some ambiguity in the question, nevertheless official ans key of jee advanced is b,c. They too went with with net force between the spheres.
Okay sir 👍🏻🙏🏼
Appreciate for your qick reply..
I also have same doubt and searching but know cleared
4:50 sir yha pr force between sphere to unchanged rhega n because force between sphere to medium pr depend he ni krta h ??
In first question OPTION A AND C ARE CORRECT........its about electric force btwn the sphere....the net electric force will decrease...isn't it????
Bro a and c is given in offical key, but logically b and c is correct
Last question was proposed hcv Solved examples..... ❤️❤️❤️❤️❤️
Question no. 10
started this series after my jee mains
is solving pyq beneficial for adv as till now I was only preparing for mains
adv pyqs is a must for adv exams dear. But solve or see solutions from learning point of view. Note down important points
@@mohitgoenka99 ok sir thanks for the guidance
will learn to approach the questions from the series and then for further practice what should I do
Sir I had done only academic in 11th and 12th for boards and after board exams I have started preparing for JEE mains from your channel... Sir now I am clearing cut off for JEE MAINS. Sir I am very thankful to you 🙏🙏Sir now please guide me how to prepare for JEE ADVANCED ?Sir are these PYQS enough or what else should I do...?
Sir pls reply
Question 4 - 22:18 (repeat)
4th problem showed that iit wale dil ke acche he 😂❤
Done❤
Re 4&5 🌟
last Q was insane 🤯🤯
Mein usme on and of ke chakkar mein phass gya tha...😢
#iitianbankerahunga
Good concepts:
5:30
30:00
Your ans for 1 que is wrong
Correct Ans is a,c
SIR in 4th question why you took spring force KL? spring is not stretched L distance
😅 it's given in question bro
The best thing about mohit sir is that they never waste our time ❤
1st ka answer a and c hoga.
Electric force doesn't change.. Instead net force change..
Force also change😂
Bhaiya pehle question main force due to sphere same rhega dielectric slab ki wajah se kam Hoga net force Aisa ans key main diya h meine chi same mistake ki thi
That's question ambiguity. Considering net force I have taken it reduces
Sir 1st question me I think a option is correct kyuki unhone between bola hai net force nahi
SIR FIRST QUESTION KA ANSWER A & C HAI ❤
Ha bhai par kaise
No its b and c 😊
Nhi Bhai tum galat ho
Question to repeat 28:00
1 question 1 option is correct according to physical galaxy book please check your solution as once and reply me who is wrong I am confused
Please make a video on must do question of hcv
Ahh!!
Last one was actually wonderfully designed....
Sir question 1 is very suspicious,
Many books are denieng the fact(b), please go throgh again to the ques sir!! It will be very helpfull. Thanks.
Sir first question me option A correct hai
Coz electric force between two charges always remains constant (coulombs law) however the net force on the particles due to each other will reduce
😂ncert se chalo yeh extra Gyan bhari parega exam me
@@Dyson2024 adv ka answer key me A C Diya hua h
Sir literally 1 month baad laga ki aaj achi padhai hui h thanku sir
My score-
Q1✅
Q2✅
Q3(silly mistake)😓
Q4🤔
Q5😅forgot that it is isosceles Δ
Thankyou so much sir, solved 4/5 correctly, almost all concepts revised !
revise : 29:30
Excellent dear
keep learning & solving
#learnlikeneverbefore
Sir current electricity ke bhi Bana dijiye 🙏
Sir please please please please please please please please please please please please .......... NTA ABAYAS ke physics section ke 109 PAPER KA SOLUTION KRVA DO .........These peper is very very very help ful for all jee aspriant ..........
KYOKI PURE RUclips PR KISI BI CHELEN. NE NTA JEE PHYSICS KE PAPER SOLUTION NHI KRVAYA
..............................................ALL STUDENTS WAIT FOR THESE ..... PLEASE PLEASE PLEASE SIR
Sir last ques me dipole ki potential energy nai likhnege kya charge ki vajah se
please bhaiya complete this series of pyq of advance before the exam
Sir, in 1st question, when spheres are immersed in liquid then forces 'BETWEEN' spheres are same.
Sir in these advance numerical type questions we do not need to round off the answer? We have to answer these in decimals?
4 can be easily done by tailers method in just seconds
I am here to do every day 2 questions only ....
#mission-2023.
Day-1
Me
Sir hmko lg rha hai ki is bar mera 97 ya 98 percentile aa jayega pr hm advanced aaj tak padhe hai ya nh ye nh pta kyuki hm self study kiye haikya hm advanced ki tyari kr site hai
Sir in question 1st, in many pyq books, A option is considered to be correct. They say that coulomb force does not depend on the nature of medium which I also disagree with.
Yes you are right .
It depends on medium
Sir plz unit dimension error measurment next plz
1st q. First two option??
Sir , here in question no. First I also marked my answer b,c .
But in arihant pyq book( A)is also correct.
For option A they are stating that since , Angle alpha is same after dipping in liquid. Therefore force remains unchanged.
Last question was 👏 amazing
Thank you sir....
30/05/2023
Sir sorry to say but you should please check the option 1 of question no. 1
Sir pls continue this series of advanced pyqss
Was able to do all ques...though they took time...but it increased my confidence to another level...electromagnetism and mechanics is my strong area xd
Sry to say, but in ques 1 A part is correct
As on immersing in dielectric medium, net force decreases to F/K but coulombic forces remains unchanged
Fnet dec due to the repulsive forces exerted by dielectric medium
This has been a debate since long dear. Official ans key of JEE Advanced gave option b (although question should have clearly mentioned net force between two spheres)
Thank you so much sir 🥳🥳🥳🥳🥳🥳🥳🥳🥳
Mai kabse wait kar raha tha
welcome dear
We are so lucky ❤ Huge respect to my GURU MOHIT SIR
wish you best
there is an error in your 1st question according to you option b and c are correct but in actual the correct option is a and c because electric force remains unchanged
26:41 34:31
4:15 Option 1 is correct
How ???
@@PragyanSrivastava_JEEaspirant. Bhai search kar lo Google pe
Gold mine channel
Sir I request plzz continue this series more pyq for jee 2022 also
yes dear.
Done with Jee Mains .... Hustle begins for the ultimate goal . Sir , Please be with us ....
Crl rank?
@@namanomar7060 not good 93% and I am a fresher .....but definitely make into IIT
Sir u r god the question become soo easy just by seeing ur neet and clean diagram here we in panic draw bad diagram which confuse us we have to draw again and solve again
❤❤❤
LAST QUESTION UFFFFFFFFF !!!!
15:48 (que.3) sir sigma =Q/πrsquare hoga n waha pe aap 2πr liye h
hre sigma is not constant. first we are finding small charge in the shaded circular ring.
The last question was just beautiful!!!! amazing session sir thansk a lot❤
sir you are rock ...
Got all the questions right except the last one ( bas usme wo triangle Wali property strike ni kari) ....thank u sir for this lovely session ❤️
Hi, where are you studying now?
Thank-you so much sir !
Now feeling confident for this chapter..only because of you ☺
Also sir if possible can you make pyq video of current electricity after this?
It would be a great help to all of us🙏☺
most welcome dear. Will try dear.
@@mohitgoenka99 okay thanks sir
Sir in 1 que a ,c is correct .Fnet will decrease but force between sphere is not . plaese correct it
yes i had the same input
Yes I also think electric forces will not change, instead buoyant force aur tension changes
This debate went on internet for a while that electric force due to charges on sphere doesn't change but in question it just said electric force between spheres (which also includes induced charges in dielectric medium)
I watched the Electrostatics lectures of ABJ sir from Mohit Tyagi channel. He has solved the same question and he also said 'If the medium will change, then the electrostatic forces will change'
@@mohitgoenka99 exaclty sir i had the same analogy when i was solving this qsn...
thank you sir for amazing explanation . you made these ques easy to solve😊
Sir you gave wrong explaination in 1st ques, A option is right because force on one sphere is reduced but force due to another sphere is not reduced, Force is reduced on one sphere because of polarisation in liquid so A should be correct
The IITs follow syllabi prescribed by NCERT. While it is true that they should have explicitly mentioned that the NET electric force reduces, the NCERT simply states that "the electric force between two objects decreases when placed in a medium", which leaves this question in a gray area.
@@cyphexal1162 bro they have talked about force between 2 sphere , which is not reduced, so A is 100% correct
The last question is so beautiful 😍
5th question was good one
It's very helpful sir for jee advanced ❤❤❤❤
thank you sir u solved every question with just basic knowledge. great learning /\
Glad to hear that
Sir in q5 could we use WET, as we put work due gravity + work due dipole =delta KE(which is zero) as intially the string was vertical then velocity=0 and at equilbrium v=0 then by equating we get work of gravity = work of dipole and at final net work is wgrav + welec=2wgrav or 2mgh????
P.s loved the video!!!!!!❤❤❤
these que. Seems so different on the D Day than actually it is ....hehe
Yes. In paper under pressure an easy question too somet sometimes appears tough.
i will make sure that competition is going to increase from your teaching style
qno 1,2,3 was durable
Sr why u marked option 1 in 1st question question as incorrect as electric force between spheres doesn't change .... It's the net electric force which reduces due to dielectric ...
It is changed coz medium has 21 dielectric constant. So new force will be f/21
Bhai dono sphere pr net force equal equal lgta h direction differ ho skta h bss n ??
@@PragyanSrivastava_JEEaspirant. Option 1 correct h .
@@PragyanSrivastava_JEEaspirant. Dono sphere par electric force same magnitude ka lagega .
Bus medium change hone se magnitude kam ho jayega
Excellent explanation
Thank you so much sir
Sir your every single word directly touches our heart and mind simultaneously ❤️❤️🙏
Yippee, mja agya sir and revision bhi hogya
great