Light is a form of energy produced by a luminous object.

Light is a type of energy that allows us to see objects around us. It is produced by certain objects called luminous objects. These objects have the ability to emit their own light. Let's understand this concept in more detail:

1. Luminous objects:
- Luminous objects are objects that produce their own light.
- They have a property called luminosity, which refers to their ability to emit light.
- Examples of luminous objects include the Sun, stars, light bulbs, and fireflies.
- These objects have a source of energy that causes the atoms and molecules within them to become excited and emit light as a result.

2. Transparent objects:
- Transparent objects are objects that allow light to pass through them easily.
- They do not produce their own light but can transmit light from a luminous object to our eyes.
- Examples of transparent objects include glass, air, and water.
- When light passes through a transparent object, it does not change its direction significantly and allows us to see objects on the other side.

3. Non-luminous objects:
- Non-luminous objects are objects that do not produce their own light.
- They cannot emit light but can reflect or absorb light from a luminous object.
- Examples of non-luminous objects include books, tables, and chairs.
- These objects are visible to us because they reflect light from a luminous object or from a light source like a light bulb.

4. Opaque objects:
- Opaque objects are objects that do not allow light to pass through them.
- They neither produce their own light nor transmit light through them.
- Examples of opaque objects include walls, wood, and metals.
- When light falls on an opaque object, it is either reflected or absorbed by the object, making it difficult for light to pass through.

Therefore, light is produced by luminous objects, which have the ability to emit their own light. Transparent objects allow light to pass through, non-luminous objects reflect or absorb light, and opaque objects do not allow light to pass through them.