mirrors.pptx science topic in science 10

lesson in science 10 quarter 2

1. Mirrors

2. REFLECTION bouncing of light. usually reverse the direction of an image in an equal yet opposite angle from which the light shines upon

3. DIFFUSE REFLECTION type of reflection wherein incident light rays are scattered in different directions due to rough and dull surfaces of a material. there is a tendency that the angle of incidence may not be equal to the angle of reflection which caused the formation of distorted images. SPECULAR REFLECTION occurs on materials with smooth surfaces

4. LAWS OF REFLECTION

5. LAWS OF REFLECTION

6. Types of Mirrors Plane Mirrors Curved Mirrors/Spherical Mirros Concave Mirrors Convex Mirrors

7. Concave Mirrors converging mirrors (characterized by inward reflecting surface). the parallel incident rays converge or intersect at a focal point after reflection. used to create enlarged image making it ideal to use in dental and make – up mirrors.

8. Convex Mirrors diverging mirrors. ( bulging outward reflecting surface) reflects the light outwards and is therefore not used to focus light useful as automobiles and trucks/ sideview mirrors to give drivers a wider area and smaller image of traffic behind them.

9. RAY DIAGRAMMING technique used to identify and trace the path that light rays take from an object or light source to the mirror or a certain point.

10. Ray Diagramming a line passing through the center of the sphere and attaching to the mirror in the exact center of the mirror. Principal Axis

11. Ray Diagramming the point in the center of the sphere Center of Curvature found at the center of the imaginary circle formed from the side/s of the mirror or lens.

12. Ray Diagramming the point on the mirror's surface where the principal axis meets the mirror Vertex

13. Ray Diagramming midway between the vertex and the center of curvature Focal Point

14. Ray Diagramming requires two or three light rays to intersect to form the image. Generally, the image formed in the following rays. P – F ray = Ray from the height of the object moving parallel with principal axis reflected by the mirror or refracted by the lens passing through the focal point. F – P ray = Ray from the height of the object moving towards the focal point will be reflected by the mirror or refracted by the lens as parallel to the principal axis.

15. Characteristics of Images Formed in the Mirror

16. Characteristics of Images Formed in the Mirror L ocation O rientation S ize T ype

17. Characteristics of Images Formed in the Mirror L ocation relative location of the image formed in front or at the back of the mirror. O rientation the inclination of the image compared to the object. The image could be inverted if the image is upside-down or upright if the image is in standing the same as the object.

18. Characteristics of Images Formed in the Mirror S ize magnification size of the image compared to the object. It could be reduced, enlarged, or unmagnified Reduced - if the image is smaller than the object Enlarged - if the image is larger than the object Unmagnified - if the image is the same size as the object

19. Characteristics of Images Formed in the Mirror T ype image could be real or virtual . A real image is formed when an actual light ray converges (always formed in front of the mirror). A virtual image is formed due to imaginary light rays (always formed at the back of the mirror).

20. All mirrors produce a real image in front of it because actual light rays are reflected by its surface.

21. The characteristics of the image formed in the curved/spherical mirror depend on the location of the object from the mirror .