Which of the following objects is a non-luminous object?

Options

A. Bulb
B. Spoon
C. Candle
D. Torch

Answer

To determine which of the following objects is a non-luminous object, we need to understand the definition of non-luminous objects.

### Step-by-Step Solution:

1. **Define Non-Luminous Objects**: Non-luminous objects are those that do not emit light on their own. They can only reflect light from luminous sources.

2. **Analyze the Options**:
- **Bulb**: A bulb emits light by itself when it is turned on. Therefore, it is a luminous object.
- **Spoon**: A spoon does not emit light on its own; it only reflects light from other sources. Thus, it is a non-luminous object.
- **Candle**: A candle emits light when it is burning. Hence, it is a luminous object.
- **Torch**: A torch also emits light when it is turned on. Therefore, it is a luminous object.

3. **Identify the Non-Luminous Object**: Based on the analysis, the spoon is the only object that does not emit light by itself.

### Conclusion:
The non-luminous object among the given options is the **spoon**.

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