Classify the objects or materials given below as opaque, transparent or translucent and luminous or non-luminous:
Air

Explanation

To classify air as opaque, transparent, or translucent, and luminous or non-luminous, we can follow these steps:

### Step 1: Understand the Definitions
- **Opaque**: Materials that do not allow light to pass through them.
- **Transparent**: Materials that allow light to pass through them clearly, enabling objects behind them to be seen distinctly.
- **Translucent**: Materials that allow light to pass through but scatter it, making objects behind them appear blurry.
- **Luminous**: Materials that emit their own light.
- **Non-luminous**: Materials that do not emit light but may reflect light from luminous sources.
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