The document discusses the characteristics and three main rays of a concave mirror. It explains that a concave mirror's surface bends inward and focuses rays of light. The three main rays are: 1) a ray parallel to the principal axis is reflected to the focal point, 2) a ray passing through the focal point is reflected parallel to the principal axis, and 3) a ray passing through the center of curvature is reflected back along the same path through the center of curvature. The image formed by a concave mirror can be real or virtual, inverted or erect, and either enlarged or the same size as the object.

1. CONCAVE MIRROR
By
NINI AMIANI
SMP 2 PALANGKA RAYA

2. INDICATOR
Student are able to identify three main rays in
concave mirror

3. Before studying the three main rays in
concave mirror, let’s see the characteristics
of them.

4. The Reflection of Concave Mirror
Characteristics of Concave Mirror :
1.The mirror surface bends inward
2.Unite the ray beam
3.In daily life, the examples are in a torch and
the lamp of car.

5. THREE MAIN RAYS
Principal axis
M F O

6. CONCLUSION
FORMATING THE IMAGE OF THE CONCAVE MIRROR :
Three main rays
1. The incident ray which is parallel to the principle axis
is reflected to the focal point (F) of the mirror.
2. The incident ray which comes through the focal point
(F) is reflected parallel to the principal axis.
3. The incident ray which comes through the point of
curvacture is reflected back through the point of
curvature (M)

7. THANK YOU
SEE YOU NEXT MEETING
BY
NINI AMIANI

8. THE FORMING OF THE IMAGE ON THE
CONCAVE MIRROR
Principal Axis
M F O
The image is real, inverted and extended in size

9. Sumbu utama
M F O
The image is virtual, erect and extended in size

10. THREE MAIN RAYS
Principal axis
M F O

11. FORMATING THE IMAGE OF THE CONCAVE
MIRROR
Three main rays
1. The incident ray which is parallel to the principle axis
is reflected to the focal point (F) of the mirror.
2. The incident ray which comes through the focal point
(F) is reflected parallel to the principal axis.
3. The incident ray which comes through the point of
curvacture is reflected back through the point of
curvature (M)

12. Principal axis
M F O
Image is virtul, erect and extendid in size

13. Principal Axis
M F O
Non-image

14. Principal axis
M F O
The image is real, inverted and same in size