Which of the following converts sunlight into heat energy?

Options

A. solar cooker
B. solar cells
C. windmill
D. none of these

Explanation

To solve the question "Which of the following converts sunlight into heat energy?" we will analyze the options provided:

1. **Identify the options**: The options given are:
- Solar cooker
- Solar cell
- Windmill

2. **Understand the function of each option**:
- **Solar cooker**: A device designed specifically to use sunlight to cook food. It absorbs sunlight and converts it into heat energy, which is then used to cook the food inside it.
- **Solar cell**: This device converts sunlight into electrical energy. It does not produce heat energy; instead, it generates electricity.
- **Windmill**: A windmill converts wind energy into electrical energy. It does not utilize sunlight at all.

3. **Determine which option converts sunlight into heat energy**:
- The solar cooker is the only device among the options that is designed to convert sunlight into heat energy. It uses the principles of absorption and reflection to heat food.

4. **Conclusion**: The correct answer is **solar cooker**.

### Step-by-Step Solution:
1. **Identify the options**: Solar cooker, solar cell, windmill.
2. **Understand the function of each option**:
- Solar cooker: Converts sunlight to heat energy.
- Solar cell: Converts sunlight to electrical energy.
- Windmill: Converts wind energy to electrical energy.
3. **Determine which option converts sunlight into heat energy**: The solar cooker is the correct answer.
4. **Conclusion**: The correct answer is solar cooker.