transparent and translucent objects are the objects that let the light pass through them eg glass, but sometimes translucent objects are colorful so they change the color of the light as it passes through them
both are transparent since you cannot expect efficient lighting when light medium is translucent or opaque. In tubelight it is the fluoroscent coating inside the the tube which produces light and in...
opaque is anything that is not see-through or translucent. if light can not pass through opaque objects so it forms a shadow. Examples of opaque objects are:*human beings and animal*trees*cardboard...