Mirrors-Properties-of-Light- Lenses- rays

Properties of Mirrors

1. MIRRORS PROPERTIES OF LIGHT QUARTER 2 MODULE 6 PRESENTED BY: SIR MARIO RECTO

2. MELC MOST ESSENTIAL LEARNING COMPETENCIES Predict the qualitative characteristics (orientation, type, magnification) of images formed by plane and curved mirrors and lenses.

3. REFLECTION bouncing of light rays off an object.

4. LAWS OF REFLECTION LAWS OF REFLECTION 1. The incident ray, the normal and the reflected ray, all lie in the same plane. 2. The angle of incidence is equal to the angle of reflection.

5. SAMPLE PROBLEM #1 Find (a) angle of reflection (b) angles a and b.  

6. SAMPLE PROBLEM #1 Find (a) angle of reflection (b) angles a and b.   normal                  

7. SAMPLE PROBLEM #2 Find (a) angle of reflection (b) angle of reflection and (c) angle a.  

8. SAMPLE PROBLEM #2 Find (a) angle of reflection (b) angle of reflection and (c) angle a.               5  

9. IMAGE CHARACTERISTICS Plane MIRROR virtual IMAGE CHARACTERISTICS erect/upright same size as the object Image distance = object distance laterally inverted

10. IMAGE CHARACTERISTICS Plane MIRROR virtual IMAGE CHARACTERISTICS erect/upright same size as the object Image distance = object distance laterally inverted L.O.S.T L- ocation O- rientation S- ize T- ype of image (L) (O) (S) (T)

11. CURVED MIRROR Curved MIRROR mirrors with curved reflecting surfaces CONCAVE MIRROR CONVEX MIRROR CURVED MIRROR

12. Concave MIRROR light rays converge at one point after they strike and are reflected from the surface. Convex MIRROR light rays diverge after they strike the mirror converging diverging

13. Concave MIRROR light rays converge at one point after they strike and are reflected from the surface. Convex MIRROR light rays diverge after they strike the mirror converging diverging

14. Concave MIRROR light rays converge at one point after they strike and are reflected from the surface. converging produce both real and virtual images

15. IMAGES FORMED BY A CURVED MIRROR Ray diagrams – method used to predict the characteristics of image formed in curved mirrors F – Focal point C – Center of Curvature light rays parallel to the principal axis passes through or diverge from focus after reflection. light rays passing through or directed towards the focus is reflected as a ray parallel to the x-axis. light ray passing through or directed towards the center of curvature retraces its path after reflection.

16. IMAGES FORMED BY A CONCAVE MIRROR Ray diagrams – method used to predict the characteristics of image formed in curved mirrors OBJECT LOCATION ORIENTATION SIZE TYPE OF IMAGE Object at INFINITY Image at F inverted smaller real

17. IMAGES FORMED BY A CONCAVE MIRROR Ray diagrams – method used to predict the characteristics of image formed in curved mirrors OBJECT LOCATION ORIENTATION SIZE TYPE OF IMAGE Object beyond C Image between C and F inverted smaller real

18. IMAGES FORMED BY A CONCAVE MIRROR Ray diagrams – method used to predict the characteristics of image formed in curved mirrors OBJECT LOCATION ORIENTATION SIZE TYPE OF IMAGE Object at C Image at C inverted smaller real

19. IMAGES FORMED BY A CONCAVE MIRROR Ray diagrams – method used to predict the characteristics of image formed in curved mirrors OBJECT LOCATION ORIENTATION SIZE TYPE OF IMAGE Object between C and F Image at beyond C inverted enlarged real

20. IMAGES FORMED BY A CONCAVE MIRROR Ray diagrams – method used to predict the characteristics of image formed in curved mirrors OBJECT LOCATION ORIENTATION SIZE TYPE OF IMAGE Object at F at infinity inverted Infinite large real

21. IMAGES FORMED BY A CONCAVE MIRROR Ray diagrams – method used to predict the characteristics of image formed in curved mirrors OBJECT LOCATION ORIENTATION SIZE TYPE OF IMAGE Object between F and P image behind the mirror upright larger virtual

22. Concave MIRROR light rays converge at one point after they strike and are reflected from the surface. Convex MIRROR light rays diverge after they strike the mirror converging diverging

23. Convex MIRROR light rays diverge after they strike the mirror diverging

24. IMAGES FORMED BY A CONVEX MIRROR Ray diagrams – method used to predict the characteristics of image formed in curved mirrors OBJECT LOCATION ORIENTATION SIZE TYPE OF IMAGE any location image behind the mirror upright smaller virtual

25. MIRROR EQUATION MIRROR EQUATION   f – focal length do – distance of object from the mirror di – distance of image from the mirror

26. MAGNIFICATION MAGNIFICATION   ho – height of the object hi – height of the image do – distance of object from the mirror di – distance of image from the mirror

27. SAMPLE PROBLEM #1 Determine the image distance and image height for a 5.00-cm tall object placed 45.0 cm from a concave mirror having a focal length of 15.0 cm. GIVEN: REQUIRED: a.) b.)   EQUATION: /   SOLUTION: (a)   SOLUTION:  

28. SAMPLE PROBLEM #1 Determine the image distance and image height for a 5.00-cm tall object placed 45.0 cm from a concave mirror having a focal length of 15.0 cm. GIVEN: REQUIRED: a.) b.)   EQUATION: /   SOLUTION: (b)    

29. SAMPLE PROBLEM #2 A shopper standing 3.0 m from a convex security mirror sees his image with a magnification of 0.25. (a) What is the distance of the image from the shopper? (b.) Where is his image located? GIVEN: REQUIRED: a.) distance from shopper b.)   EQUATION:   SOLUTION: (b)   SOLUTION: (a) Distance from shopper =  

30. SAMPLE PROBLEM #3 A tall light bulb was placed at a distance of 50-cm from a concave mirror having a focal length of 25 cm. Determine (a.) the image distance and (b.) the magnification of the image. GIVEN: REQUIRED: a.) b.) m   EQUATION: /   SOLUTION: (a)   SOLUTION: (b)  

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