When is kinetic energy transferred from one object to another? question 24 options: when two objects collide when two objects are moving when two objects pass one another when two objects are in two places

The illuminance of a surface varies inversely with the square of its distance from the light source. if the illuminance of a surface is 120 lumens per square meter when its distance from a certain light source is 6 meters, by how many meters should the distance of the surface from the source be increased to reduce its illuminance to 30 lumens per square meter?