We cannot see a non-luminous object with out the presence of a source of light around it. Discuss why?

Explanation

### Step-by-Step Solution:

1. **Understanding Non-Luminous Objects**:
- Non-luminous objects are those that do not emit their own light. Examples include a book, a chair, or a wall.

2. **Requirement of Light for Visibility**:
- To see an object, light must enter our eyes. For non-luminous objects, they do not produce light; therefore, we cannot see them unless there is light reflecting off them.

...