Mark the correct statement(s) w.r.t. a concave spherical mirror.

Options

A. For real extended object, it can form a diminshed virtual image
B. For real extended object, it can form a magnified virtual image
C. For virtual extended object, it can form a diminshed real image
D. For virtual extended object, it can form a magnified real image

Explanation

To determine the correct statements regarding a concave spherical mirror, let's analyze the properties of concave mirrors step by step.

### Step-by-Step Solution:

1. **Understanding Concave Mirrors**:
- A concave mirror is a spherical mirror that curves inward. It can produce both real and virtual images depending on the position of the object relative to the mirror's focal point.

2. **Image Formation**:
- **Real Images**: Formed when the object is placed beyond the center of curvature (C). These images are inverted and can be projected on a screen.
- **Virtual Images**: Formed when the object is placed between the focal point (F) and the mirror. These images are upright and cannot be projected on a screen.

3. **Magnification**:
- **Diminished Virtual Image**: When the object is placed between the focal point and the pole of the mirror, the virtual image formed is magnified.
- **Magnified Real Image**: When the object is placed between the focal point and the center of curvature, the real image formed is diminished.

4. **Analyzing Statements**:
- **Statement A**: "For an extended object, it can form a diminished virtual image."
- This statement is **incorrect** because a concave mirror forms a magnified virtual image when the object is between the focus and the mirror.
- **Statement B**: "For a real extended object, it can form a virtual magnified image."
- This statement is **correct** as a concave mirror can form a virtual magnified image when the object is placed between the focus and the mirror.
- **Statement C**: "For a virtual object, it can form a diminished real image."
- This statement is **correct** because when the virtual object is placed in front of the mirror, it can produce a diminished real image.

5. **Conclusion**:
- The correct statements regarding a concave spherical mirror are **B and C**.