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Refraction At Spherical Surfaces quiz

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Terms in this set (15)

  • What law is used to describe the refraction of a single ray of light at a flat boundary?
    Snell's law is used to describe the refraction of a single ray of light at a flat boundary.
  • What happens when multiple rays of light from an object pass through a spherical boundary?
    They refract and can form an image inside a different medium.
  • What determines whether the image formed by a spherical surface is real or virtual?
    The shape of the surface and the sign of the focal length determine if the image is real or virtual.
  • What is the general image distance equation for refraction at a spherical surface?
    The equation is n1/s_o + n2/s_i = (n2 - n1)/R, where n1 and n2 are refractive indices, s_o is object distance, s_i is image distance, and R is the radius of curvature.
  • How is the radius of curvature signed for a convex spherical surface?
    For a convex surface, the radius of curvature is considered positive.
  • How is the radius of curvature signed for a concave spherical surface?
    For a concave surface, the radius of curvature is considered negative.
  • What does a positive image distance indicate in the context of spherical surfaces?
    A positive image distance indicates a real, inverted image.
  • What does a negative image distance indicate in the context of spherical surfaces?
    A negative image distance indicates a virtual, upright image.
  • If an object is placed in air in front of a concave surface, what is the refractive index of the initial medium?
    The refractive index of air is 1.
  • In the example given, what is the object distance if the object is 5 cm in front of the surface?
    The object distance is +5 cm.
  • What is the refractive index behind the surface in the example problem?
    The refractive index behind the surface is 1.44.
  • What is the radius of curvature for the concave surface in the example, and how is it signed?
    The radius of curvature is -7 cm, negative because the surface is concave.
  • What is the calculated image distance in the example problem?
    The image distance is -5.5 cm.
  • Is the image in the example real or virtual, and why?
    The image is virtual because the image distance is negative.
  • What is the orientation of a virtual image formed by a spherical surface?
    A virtual image is always upright.