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2. Contents
• Spherical Mirrors
• Its Types
• Important terms Related to Spherical Mirror
• Rules for image Formation by spherical Mirror

3. Spherical Mirror
• Spherical mirrors are
the mirrors that have a
curved reflecting
surface.

4. Types of spherical mirror
• Concave Mirror
• Convex Mirror

5. Concave Mirror
When the reflecting
surface of the spherical
is concave, i.e, bent
inside, then it is called
a concave mirror.

6. Convex mirror
• When the reflecting
surface of the
spherical is convex, i.e,
bent outside, then it is
called a convex mirror.

7. Commonly used terms about spherical mirror

8. Principal focus and focal length of spherical mirror

9. Rules for image formation by spherical mirror
•There are four rules for
image formation by
spherical mirror

10. Rule: 1
• The incident ray
that comes parallel
to the principal
axis after
reflection, passes
through the focus
as shown.

11. Rule: 2
• The incident ray
coming from focus
after reflection
becomes parallel to
the principal axis.

12. Rule: 3
• The incident
ray coming
through ‘C’
retraces its
path.

14. Rule: 4
The Incident ray
striking at pole by a
certain angle is
reflected through the
same angle.