If an object gives off light, it is a luminous object.The luminous object gives off its energy and we see it. If you shine light on an object, it is an illuminated object, it just reflects the light back into your eyes.
Objects which do not give out light can still reflect light.
A black hole
Because the shadow of an opaque object is simply a region where no light falls, so there's no light to reflect from there to your eyes. A place from which no light reaches your eyes appears black.
No light travels in a straight line. However, it can be reflected to give the impression it has travelled around an object.
Anything that you can't see in a dark room. Like my shoes, for example.
Objects which do not give out light can still reflect light.
A black hole
It is a non luminous object because it does not give out it's own light !
According to the primary level science the object which emit their own light are the luminous object.....
energy
because there is no light for it to reflect off
It is an object which allows light partially through it, when seen through does not give a clear image of the object being looked at. For example ; Frosted Glass
When an object is radiating light, it means that the object produces light. When an object is reflecting light, it means that light "bounces off" the surface of that object.
How much more light does the sun give off than an object with the least apparent magnitude that can be viewed by the naked eye
Because the shadow of an opaque object is simply a region where no light falls, so there's no light to reflect from there to your eyes. A place from which no light reaches your eyes appears black.
No light travels in a straight line. However, it can be reflected to give the impression it has travelled around an object.
When an object absorbs the light that hits it, the object appears dark.