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Chapter 25

Chapter 25. The Reflection of Light: Mirrors. Wave Fronts and Rays. The Reflection of Light. Law of Reflection: The incident ray, the reflected ray, and the noral to the surface all lie in the same plane, and the angle of reflection is equal to the angle incidence:.

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Chapter 25

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  1. Chapter 25 The Reflection of Light: Mirrors

  2. Wave Fronts and Rays

  3. The Reflection of Light Law of Reflection: The incident ray, the reflected ray, and the noral to the surface all lie in the same plane, and the angle of reflection is equal to the angle incidence:

  4. The Formation of Images by a Plane Mirror

  5. Formation of Images by a Plane Mirror

  6. Full-Length Versus Half-Length Mirrors

  7. Spherical Mirrors

  8. Spherical Mirrors Concave Mirror Convex Mirror

  9. The Formation of Images by Spherical Mirrors Ray Tracing for a Concave Mirror Ray 1. This ray is initially parallel to the principal axis and, therefore, passes through the focal point F after reflection from the mirror Ray 2. This ray passes through the focal point F and is reflected parallel to the principal axis. Ray 3. This ray travels along a line that passes through the center of curvature C and follows a radius of the spherical mirror; as a result, the ray strikes the mirror perpendicularly and reflects back on itself

  10. The Formation of Images by Concave Mirrors

  11. The Formation of Images by Convex Mirrors Ray Tracing for a Convex Mirror Ray 1. This ray is initially parallel to the principal axis and, therefore, appears to originate from the focal point F after reflection from the mirror Ray 2. This ray heads toward the focal point F emerging parallel to the principal axis after reflection. Ray 3. This ray travels toward the center of curvature C; as a result, the ray strikes the mirror perpendicularly and reflects back on itself

  12. The Mirror Equation and the Magnification Equation The Mirror Equation The Magnification Equation

  13. Sign Conventions for Spherical Mirrors Focal Length f is ___ for a concave mirror. f is ___ for a convex mirror. Object Distance d0is ___ if the object is in front of a mirror (real object). d0is ___ if the object is behind the mirror (virtual object). Image Distance diis ___ if the object is in front of a mirror (real object). diis ___ if the object is behind the mirror (virtual object). Magnification m is ___ for an image that is upright with respect to the object. m is ___ for an object that is inverted with respect to the object.

  14. Example 1 An object is placed 9.00 cm in front of a mirror. The image is 3.00 cm closer to the mirror when the mirror is convex than when it is planar. Find the focal length of the convex mirror (p. 776) Example 2 The radius of curvature of a mirror is 12 cm. A diamond ring is placed in front of this mirror. The image is twice the size of the ring. Find the object distance of the ring. (p. 776)

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