Define self luminous, non luminous and …

A luminous body can serve as a source of light. A luminous body is an object that shines by its own light. The sun is our chief source of light. It is naturally luminous. Fire, too, is luminous. A

A non-luminous body cannot serve as a source of light. A non-luminous body is an object that does not shines by its own light. It needs a luminous body in its surrounding whose light it can reflect and become visible. Examples of non-luminous objects are Trees, Books, Wall's etc.

 Incandescence means producing a bright light from a heated filament or other part: an incandescent lamp.

• Luminous Objects: Luminous Objects are objects which exhibit light in their own. Examples: - Sun, flame of a burning candle
• Non- Luminous: Non- Luminous Objects are objects that reflect light from luminous bodies Examples: - moon, earth
• Incandescence is called “hot light,” because this light is produced when objects are hot enough to glow. For example, light from a burning candle, a burning match, or burning sparklers.