Convex Mirror vs Plane Mirror — Difference (with Table & FAQs)
Convex Mirror vs Plane Mirror compared side by side — a 5-row comparison table, 4 key points and 3 exam FAQs. Class 10 Physics, free and no sign-up.
TL;DR: Convex Mirror vs Plane Mirror compared side by side — a 5-row comparison table, 4 key points and 3 exam FAQs. Class 10 Physics, free and no sign-up.
Written & reviewed by the Syllab.in Academic Team (CBSE/NCERT subject experts) · Updated
The main difference between Convex Mirror and Plane Mirror: Convex mirrors diverge light rays while plane mirrors reflect parallel rays symmetrically. Convex mirrors provide wider field of view.
Convex Mirror vs Plane Mirror — Comparison Table
| Basis | Convex Mirror | Plane Mirror |
|---|---|---|
| Shape | Curved outward | Flat surface |
| Focal length | Has negative focal length | Focal length is infinite |
| Image type | Always virtual and diminished | Always virtual and same size |
| Field of view | Wider field of view | Limited field of view |
| Magnification | Always less than 1 | Always equals 1 |
Key Points
- Convex mirrors diverge all incident rays
- Plane mirrors show real size of object
- Convex mirrors are used in cars and shops
- Convex mirrors provide safety with wider view
Frequently Asked Questions
What is the difference between a convex mirror and a plane mirror?
A plane mirror has a flat reflecting surface, while a convex mirror bulges outwards. The plane mirror reflects rays without converging or diverging them; the convex mirror spreads reflected rays apart.
How do the images they form differ?
A plane mirror forms an image the same size as the object, as far behind the mirror as the object is in front. A convex mirror always forms an image that is virtual, erect and smaller than the object.
Why are convex mirrors used as rear-view mirrors on vehicles?
Because they diverge the reflected rays, they cover a much wider field of view than a flat mirror of the same size. The trade-off is that objects appear smaller and therefore farther away than they really are.