The pronoun that takes the place of the noun 'light' is it, as a subject or an object pronoun.Examples:The light in the stairwell is out. It must need a new bulb. (the pronoun 'it' takes the place of the noun 'light' as the subject of the second sentence)The light in the stairwell is out. I need to find a bulb for it. (the pronoun 'it' takes the place of the noun 'light' as the object of the preposition 'for')
If light travels through an object, it is still called light. If you want to specify, you might say "light travelling through an object".
An Object which reflects light is called an illuminous object. e.g) The Moon: Reflects off sunlight
The verb is called a transitive verb if it takes a direct object.The verb is called an intransitive verb if it has no direct object or only an indirect object.
Absorption; the light is absorbed by the object.
When light passes through an object, we say it is transmitted. Transparent objects transmit a lot of light. basically it is called shadow
A visible object.
this object is called a lens
The amount of space that an object takes up is known as its volume.Volume is how much space takes up in an object
reflected
The bouncing of light is called reflection.
Its an opaque object.