CSIR NET DEC 2018 Physical Science | Quantum Mechanics Questions Solved

[@moumitasarkar2805]

You are doing a great job sir....God bless u...

[@unnikrishnankh5152]

At 7.00, you said that the exponentials cancel each other. That's not the right argument. It may mislead someone that the algebra of the exponential of operators follow the usual exponential algebra of nunbers. The general relation is e^A.e^B=e^(A+B).e^[A,B]/2, where A and B are operators and [A,B] is their commutator. In this case, the operators being p and -p, their commutator vanishes and the answer is simply e^(p+-p)=I, the unit operator. At 24.05 you used the quantization rule for two rigid walls. Its wrong. The potential has no rigid walls.

[@physica2153]

Thanks for suggestions!!😊

[@deependraswami1775]

Right 👍

[@ankusingh8815]

Love the way u explain... Hope to see many more vedios of urs ...

[@sushilbijalwan3655]

Fantastic, previous your solutions These looks very simple when you solve it..........

[@bholanathmahato2433]

In 7:03 how exponential terms will cancel out , remember X and P does not commute in quantum mechanics , so you can't cancel out . It's wrong.

[@astha475]

Sir how we can write this rotation matrix.can you tell us..

[@nilanjannandi1159]

Old Griffiths quantum book problem number 4.56 it's solution available every where

[@arkshitpande5902]

Sir ek doubt hai agr yeh rotation y axix me hota tb kya hota

[@GagandeepSingh-vi1um]

At 7:00, I dont think the two operators on left and right of x^2 will cancle just like that.

[@SuchitraRamamoorthy]

Sir what will be the (nx, ny, nz) values for the first excited state of 3-D anisotropic harmonic oscillator. Plz tell how to choose values in case of 2-D anisotropic also. Thank you

[@ramji7758]

Is Rotation matrix of vector different than operator,

[@mahendrabirla5337]

Please tell me, Which study material are you using for this type of strong basic and problem skills

[@PavanPavan-lt7hp]

Yaa plz suggest us books for the reference

[@vikashkumarmukhia3013]

So thanks to you Sir you are God to me .

[@nilanjannandi1159]

Brother at 7.12 p and x don't commute.... It's translation operator.... It will be x+l.... It's a question from coherent state

[@nilanjannandi1159]

at 20.5 rotation of spin state there is i which is wrong

[@bastavchakravertty8341]

Very nice and elaborate explanation. I hope that someone reads I..... I solved the rotation of the spin state problem using the spin rotation operator exp((-i/h)*(h/2)*60*sigma x), where h is the reduced Planck constant, and got the same answer, 3/4. Basically, the operation is same. But some are of the opinion that the answer should be 1/4 as in question it is stated that the particle is in eigenstate of sigma z so the factor of 2 in the denominator of the above formula will not be there.

[@sayujya3]

U can access this channel for net physics class kzbin.info/www/bejne/f2ibZ2mBaMd5d8k

[@ShivaniSharma-wf7qy]

Sir i want to know k jese mene msc physics m kri hai or i got admin in chemical engg department as a phd scholar on topic computational fluid dynamics... should i join or not sir ??? Plz rply soon

[@musicsymphony8172]

Sir...As you made a videos on Xray diffraction....please If possible make a videos on Electrodynamics....it would be helpful for us...

[@priyankahm4335]

Hlo sir can u guide me how to crack IUCAA 2021

[@studywithgirishkumar8271]

Not visible

[@malinimadhavan4881]

sir i have a doubt... in first problem(1.00 mins) you take 1/2 omega y as 2 and 1/2 omega z as 4.. if you take omega y as 2 then why you take 8 omega as 1/2 4 omega??? please clear my doubt....

[@shruthimaappaji47]

Sir Please tell me,which books are you using for this type of problem skills and problems

[@physica2153]

Follow basic books. For quantum..zettili is best

[@priyankahm4335]

Sir plz solve atlest one question paper of IUCAA entrance test plzzzz sir plz. 🙏

[@physica2153]

Yes sure. My people do that.

[@priyavashisht9247]

Thanks a lot sir 🙏

[@abumushashah6540]

Quantum spin , sigma_z eigen state +1.

[@sonikakodan6175]

sir aap bhout krrhe ho..keep it up..

[@videoviewerviewer4107]

Thank you Sir

[@subhosaha3731]

Make a series based on classical mechanics CSIR and GATE

[@SameerSingh-ku1kg]

I'm very hopeless sir right now ..I have tried three times ...I don't know during exam kya ho jata hai ...I know everything sare concept clear hai but unable to qualify NET

[@mjena2186]

Hydrogen atom opsn b and C both crct i think plz reply

[@dipikachandra7751]

Good job !

[@deeptibhimavarapu5852]

Thank you so much sir. You are a great teacher. God bless you sir.

[@physica2153]

Thanks for appreciating!! Please do share this with your friends

[@deeptibhimavarapu5852]

@@physica2153 definitely

[@deeptibhimavarapu5852]

Sir one more request. Jese aapne x-ray diffraction concept and formula par video banaya wese hi solid state physics par video banaiye sir. Only selected part for competition exam. Like Dispersion relation, Fermi energy....etc. Ur videos r very much helpful for those who can't go out for coaching. Please sir if you can. Thank you

[@MuthuLakshmi-ki9cw]

Fabulous

[@satavisharakshit]

Thank you.

[@physica2153]

Thanks 😁!! Please do share this channel with others

[@satavisharakshit]

@@physica2153 sure sir

[@factzofphysics4337]

Sir pls also tell some trick

[@rajendrakumarkushawaha3332]

M.n number sir kaise net jrf ka taiyari kare

[@rajranpara257]

Sir make playlist...please..

[@physica2153]

Yeah...I will

[@laughtermedicine6578]

Thanks!! Nice

[@sanjeevthakur8744]

good job sir

[@physica2153]

Thanks. Please share this channel

[@mitalipradhan1932]

Thanks

[@physica2153]

Do share with your friends

[@sawankumarbhakar3389]

niceeee

[@sirinas2852]

👌

[@bidhandas6418]

You take a lot of time solving the questions. Be little fast.

[@physica2153]

Thanks for suggestions!!😊

[@Neeraj-is1jt]

Badiya bewakoof banate hain yar rotation matrix direct likh di