Concave Mirror: All Possible Image Formations
| Object Position | Image Position | Nature of Image | Size |
|---|---|---|---|
| At infinity | At F | Real, inverted | Highly diminished (point-sized) |
| Beyond C | Between C and F | Real, inverted | Diminished |
| At C | At C | Real, inverted | Same size |
| Between C and F | Beyond C | Real, inverted | Enlarged |
| At F | At infinity | Real, inverted | Highly enlarged |
| Between F and P | Behind mirror | Virtual, erect | Enlarged |
Key:
- P = Pole
- F = Principal Focus
- C = Centre of Curvature
Convex Mirror: All Possible Image Formations
| Object Position | Image Position | Nature of Image | Size |
|---|---|---|---|
| At infinity | At F (behind mirror) | Virtual, erect | Highly diminished |
| Anywhere in front of mirror | Between P and F (behind mirror) | Virtual, erect | Diminished |
Quick NEET/JEE Points
- Concave mirror can form both real and virtual images.
- Convex mirror always forms virtual, erect, and diminished images.
- Real images are inverted and can be obtained on a screen.
- Virtual images cannot be obtained on a screen.
- Convex mirrors are used as rear-view mirrors because they provide a wider field of view.