Question

difference between a luminous body and a source of light

Answer 1

Luminous body is object which has its own light source of light is battery sun

Answer 2

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

a source of light
Light is an electromagnetic radiation. A particular frequency of this radiation ( around 390-700 nm) is visible to the human eye. Everything that we see around us is because of light. Light is a form of energy and like all energies, it is produced from a source. In physics, these are called Light sources.
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