QID 705057 I CSIR NET June 2023 Physics Solutions I Quantum Mechanics I Dr. Manu Pancholi IIT Delhi

[@Twin_sisters_vlog]

Nice sir ji

[@gravitoninstitute]

Thanks ❤

[@sahinsorifi]

Excellent problem.

[@gravitoninstitute]

Indeed!❤

[@sonuchhillar6310]

Keep it up Madan

[@gravitoninstitute]

Thanks for appreciation ❤

[@sonuchhillar6310]

How we can put 2nd term zero if A(t) is time dependent function?

[@gravitoninstitute]

Good question....it's a simple difference of total time derivative and partial time derivative......here no direct dependency of A on t is given. That's why we put it zero. But it doesn't mean that it's total time derivative is also zero. Please go through the total time derivative and partial time derivative concept once. You will understand it easily I hope you get some idea.... please let us know you get it or not