two tutors already give you idea about the important topics of optics and wave oscillation. but I strongly recommend you that first focus on important subjects i.e mp, Electrodynam...
Considering your name, that is Himanshu "Pandey", I could surely assume that you have no reservations!( or in the limiting case you you may have EWS reservation). So, I suppose you...
in optics interference, diffraction, reflection, diffraction,snell's law and ,lens formula are important.
But I suggest you dear focus on Ed, mathematical, Qm more n kore you can ...
for wave oscillation :- simple harmonics oscillation, damped and forced harmonic oscillation, superposition of two or simple harmonic oscillator, wave motion, Doppler effect ......