The field of view is maximum when image is formed by reflection at

Options

A. plane mirror
B. convex mirror
C. concave
D. cylindrical mirror

Answer

To solve the question "The field of view is maximum when the image is formed by reflection at," we need to analyze the different types of mirrors and their effects on the field of view.

### Step-by-Step Solution:

1. **Understanding the Types of Mirrors**:
- **Plane Mirror**: Reflects light to produce an image that is the same size as the object, maintaining the same height.
- **Convex Mirror**: Curves outward and diverges light rays, producing a virtual image that is smaller than the object but allows a wider field of view.
- **Concave Mirror**: Curves inward and converges light rays, producing a real image that can be larger or smaller depending on the object's distance from the mirror.
- **Cylindrical Mirror**: Has a cylindrical shape and is used for specific applications but does not significantly affect the field of view.

2. **Analyzing the Field of View**:
- The field of view refers to the extent of the observable world that can be seen at any given moment.
- A mirror that allows for a wider field of view will enable us to see more of the surroundings.

3. **Comparing the Mirrors**:
- **Plane Mirror**: Provides a limited field of view since it only reflects what is directly in front of it.
- **Convex Mirror**: Expands the field of view significantly because it diverges light rays and allows us to see a larger area behind and to the sides of the mirror.
- **Concave Mirror**: Generally reduces the field of view as it focuses light and can create a smaller image.
- **Cylindrical Mirror**: Not commonly used for maximizing field of view.

4. **Conclusion**:
- Among the options, the **convex mirror** provides the maximum field of view because it allows more light to enter and reflects a wider angle of view.

### Final Answer:
The field of view is maximum when the image is formed by reflection at a **convex mirror**.

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