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Properties of Reflective Waves Curved Mirrors. Image close to a concave mirror appear:

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Presentation on theme: "Properties of Reflective Waves Curved Mirrors. Image close to a concave mirror appear:"— Presentation transcript:

1 Properties of Reflective Waves Curved Mirrors

2 Image close to a concave mirror appear:

3 Image far from a concave mirror appear:

4 Another factor that influence image appearance is: Curvature R = C =

5 Image location can be found using the mirror equation:

6 Two kinds of images - images that form in front of the mirror - images that form behind the mirror

7 The __________is half way between the center of curvature and the mirrors surface The distance to the focal point is the ______________

8 _____________ form on the front side of the mirror _____________ form on the back side of the mirror The mirror is drawn so the _____________

9 _____________ indicate the front side of the mirror _____________ indicate the back side of the mirror The _____________ runs through the center of the mirror

10 _____________ are above the principal axis _____________ are below the principal axis

11 The measure of the image compared to the object M- M=

12 M is positive means _____________ M is negative means _____________

13 1._____________ 2._____________ 3._____________

14 A concave makeup mirror is designed so that a person 25.0 cm in front of it sees an upright image at a distance of 50.0 cm behind the mirror. What is the radius of curvature? What is the magnification? Is it real or virtual?

15 A concave shaving mirror has a focal length of 33cm. Calculate the image position of a cologne bottle placed in front of the mirror at a distance of 93 cm. Calculate the magnification of the image. Is it real or virtual, upright or inverted? Draw a ray diagram.

16 A pen is placed 11.0 cm from a concave mirror produces a real image 13.2 cm from the mirror. What is the focal length? What is the magnification of the image? If the pen is placed 27.0 cm from the mirror, what is the new position of the image? What is the magnification? Is it real or virtual?

17 Where do we see convex mirrors?

18 _____________ mirrors Image is always _____________ _____________ are always behind the mirror

19 See page 538 Table 14-4

20 A convex mirror with a radius of curvature of 0.550 cm is placed above the aisles in a store. Determine the image distance and magnification of a customer lying on the floor 3.1 m below the mirror. Is the image real or virtual, upright or inverted?

21 A spherical glass ornament is 6.00 cm in diameter. If an object is placed 10.5 cm away from the ornament, where will its image form? What is the magnification? Is the image real or virtual, upright or inverted? Draw a ray diagram.

22 A soda bottle is placed 44cm from a convex mirror. If the mirror’s focal length is 33 cm how far from the mirror’s surfaced does the bottle’s image form? What is the magnification? Is the image real or virtual, upright or inverted? Draw a ray diagram.

23 When light rays do not intersect at a unified point, the observer will see a blurred image

24 To eliminate spherical aberration: Use mirrors with small diameters Use parabolic mirrors

25 Segments of a Paraboloid (three dimensional parabola) All rays parallel to the principal axis converge at the focal point

26 Where do we use Parabolic Mirrors?

27 Two types of telescopes _____________ – combination of lenses _____________ – uses curved lenses and small mirrors

28 Parabolic mirror (objective mirror) _____________


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