SPHERICAL_SCIENCE 10 POWERPOINT PRESENTATION

SPHERICAL

1. SCIENCE 10 Quarter 2 Week 4

2. ACTIVITY “Message in the Mirror”

3. “ LIFE IS ONLY A REFLECTION OF WHAT WE ALLOW OURSELVES TO SEE.” MESSAGE

4. MIRROR LEFT – RIGHT REVERSAL Also known as horizontal mirroring, refers to the transformation of an image where its left and right sides are flipped as if seen in a mirror. In this process, the positions of objects or elements in the image are reversed along a vertical axis.

5. MIRROR LEFT – RIGHT REVERSAL

6. SPHERICAL MIRRORS

7. REFLECTION of LIGHT ON SPHERICAL MIRRORS

8. Two Kinds of Spherical Mirrors CONCAVE CONVEX

9. KINDS OF SPHERICAL MIRROR 1.Concave Mirror - It reflects light inward to one focal point. It is used to focus light. Also known as converging mirror has a reflecting surface that is recessed inward (away from the incident light).

10. KINDS OF SPHERICAL MIRROR 1.Convex Mirror - Also known diverging mirror is a curved mirror in which the reflective surface bulges towards the light source. Convex mirrors reflect light outwards ; therefore they are not used to focus light

11. There are two types of images formed by reflecting surfaces:

12. REAL VIRTUAL A real image is formed when light rays actually meet after reflection. formed when light rays do not actually intersect after reflection, but they appear to diverge from the mirror . A real image can be formed on a screen. A virtual image cannot be formed on a screen. A real image is inverted with respect to the object. A virtual image is erect with respect to the object. CONCAVE CONVEX

13. 1.Vertex (V) – the middle portion/part of the mirror 2. Center of curvature (C) – the center of the sphere of which the curved mirror is a part of 3.Radius of curvature (r) – the distance between the center of curvature (C) and the vertex (V) 4.Principal axis (P) – the line drawn passing through the center of curvature and the vertex Mirror Terminology

14. 5.Secondary axis (S) – any line drawn passing the center of curvature and hitting any part of the reflecting surface of the mirror 6.Aperture (A) – the opening of the mirror 7.Focus (F) - the point where the reflected rays meet 8.Focal length (f) - is the distance between the focus and the vertex. For spherical mirrors with small openings, the focal length is one-half the radius of curvature .

15. Center of Curvature the center of the sphere of which the curved mirror is a part of C P PRINCIPAL AXIS the line drawn passing through the center of curvature and the vertex A APERTURE the opening of the mirror r RADIUS OF CURVATURE the distance between the center of curvature (C) and the vertex (V) VERTEX the middle portion/part of the mirror V FOCUS the point where the reflected rays meet F f FOCAL LENGTH the distance between the focus and the vertex. For spherical mirrors with small openings, the focal length is one-half the radius of curvature

16. 1 2 3 4 5 6 7 8

17. Location, Orientation, Size, and Type of Image Formed in Concave Mirror

18. Location, Orientation, Size, and Type of Image Formed in ConVEX Mirror

19. RAY METHOD OF IMAGE FORMATION Ray 1 – a ray parallel to the principal axis and is reflected by the mirror passing through the focus Ray 2 – a ray travelling along a secondary axis passing through the focus and reflected back into the opposite direction Ray 3 – a ray that passes through the focus then reflected parallel to the principal axis

20. Difference Between Convex and Concave Lens