q23 ans ac
but i am getting c only
as a can be wrong when at t=0 all particles are at extreme position
all particles will be at rest simultaneously thrice
Sanket Biradar last edited by Sanket Biradar
Except nodes all particles will be at rest twice in one time period
i think you didnt read the statement what i said please read again
sorry i meant thrice not twice it has been edited
Sanket Biradar last edited by
It's wrong for me... different cases are possible and behaviour at nodes proves its wrong
Aaayush last edited by Aaayush
First time interval is (0,T] or [0,T)
Thrice at rest vala case means u are taking time interval as [0,T] which is wrong as the next interval acc to you will be [T, 2T].
All the time intervals are mutually exclusive.
So only twice in an interval, all the particles will be at rest.