An apparatus and a method to locate a three dimensional object and to execute a predetermined operation on said object, such as playing carom is disclosed. The apparatus includes a robot (200) having an end effect or (202) mounted on a gantry frame. The apparatus further includes a plurality of imaging sensors mounted at predetermined positions in said gantry frame. A data processing system (computer) (214) is provided in communication with said robot (200) and said imaging sensors. Further a controller 216 connected to said data processing system (214) to regulate the functions of said data processing system. The end-effect or (202) provided in the robot (200) consists of at least two degrees of freedom, one for rotational (302) and other for transmitting force (306a).