Two concave mirrors of equal radii of curvature R are fixed on a stand facing opposite directions. The whole system has a mass m and is kept on a frictionless horizonal table.
Two blocks A and B, each of mass m, are placed on the two side of the stand. At t=0, the separation between A and the mirrors is 2R and also the separation between B and the mirrors is 2R. The block B moves towards the mirror at a speed v. All collisions which take place are elastic. Taking the original position of the mirrors stand system to be x=0 and X -axis along AB, find the position of the image of A and B at t=
a.)` R/(upsilon)`, b.) `(3R)/(upsilon)` c.) `(5R)/(upsilon)`

Answer

A, B, C, D