Sir what s quick approach of this one B A sinusoidal

Last updated: 6/24/2023

Sir what s quick approach of this one B A sinusoidal travelling wave of wavelength propagates along positive x axis Three particles 1 2 and 3 in a medium are such that 1 and 2 always have same speed while 1 and 3 always have same velocity The minimum distance between particles 1 1 and 2 is 4 3 1 and 3 is 2 2 and 3 is 4 1 and 2 is 3