[" An object is placed at a distance of "40cm" from "],[" a concave mirror of focallength "15cm" .If the object "],[" is displaced through a distance of "20cm" towards "],[" the miror,the displacement of the image will be: "],[" (1) "30cm" away from the miror "],[" (2) "36cm" away from the miror "],[" (3) "30cm" towards the mirror "],[" (4) "36cm" towards the mirror "]