A ball strikes a wall with a velocity vec(u) at an angle theta with the normal to the wall surface and rebounds from it at an angle beta with the surface. Then :

A ball strikes a wall with a velocity vec(u) at an angle theta with th

1.	A ball strikes a wall with a velocity vec(u) at an angle theta with the normal to the wall surface and rebounds from it at an angle beta with the surface. Then :
Answer» `(theta + BETA)` is equal to `90^(@)` is wall is smooth If wall is smooth COEFFICIENT of resitution `= (TAN beta)/(cot theta)` If wall if smooth coefficient of resitution `LT (tan beta)/(tan theta)` None of these Answer :B