Chapter 23: Light: Geometric Optics

124 Questions | Total Attempts: 1171

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Refraction Quizzes & Trivia

Questions and Answers
  • 1. 
    Reflection, refraction, and the formation of images by mirrors and lenses has been successful described by the
    • A. 

      Wave model of light.

    • B. 

      Ray model of light.

    • C. 

      Particle model of light.

    • D. 

      None of the given answers

  • 2. 
    The angle of incidence
    • A. 

      Must equal the angle of reflection.

    • B. 

      Is always less than the angle of reflection.

    • C. 

      Is always greater than the angle of reflection.

    • D. 

      May be greater than, less than, or equal to the angle of reflection.

  • 3. 
    The principle on which mirrors work is
    • A. 

      Refraction.

    • B. 

      Polarization.

    • C. 

      Dispersion.

    • D. 

      Reflection.

  • 4. 
    A plane mirror forms an image that is
    • A. 

      Real and upright.

    • B. 

      Virtual and upright.

    • C. 

      Real and upside down.

    • D. 

      Virtual and upside down.

  • 5. 
    Plane mirrors produce images which
    • A. 

      Are always smaller than the actual object.

    • B. 

      Are always larger than the actual object.

    • C. 

      Are always the same size as the actual object.

    • D. 

      Could be smaller, larger, or the same size as the actual object, depending on the placement of the object.

  • 6. 
    An image formed when the light rays do not actually pass through the image location, and would not appear on paper or film placed at that location is referred to as a
    • A. 

      Real image.

    • B. 

      Virtual image.

  • 7. 
    An image formed when the light rays pass through the image location, and could appear on paper or film placed at the that location is referred to as a
    • A. 

      Real image.

    • B. 

      Virtual image.

  • 8. 
    Is it possible to see a virtual image?
    • A. 

      No, since the rays that seem to emanate from a virtual image do not in fact emanate from the image.

    • B. 

      No, since virtual images do not really exist.

    • C. 

      Yes, the rays that appear to emanate from a virtual image can be focused on the retina just like those from an illuminated object.

    • D. 

      Yes, since almost everything we see is virtual because most things do not themselves give off light, but only reflect light coming from some other source.

    • E. 

      Yes, but only indirectly in the sense that if the virtual image is formed on a sheet of photographic film, one could later look at the picture formed.

  • 9. 
    A spherical mirror on which reflection takes place on the outer surface of the spherical shape is referred to as a
    • A. 

      Convex mirror.

    • B. 

      Concave mirror.

  • 10. 
    A spherical mirror on which reflection takes place on the inner surface of the sphere is referred to as a
    • A. 

      Convex mirror.

    • B. 

      Concave mirror.

  • 11. 
    If the radius of curvature of the concave mirror is r, the focal length is
    • A. 

      2r.

    • B. 

      R.

    • C. 

      R/2.

    • D. 

      Cannot be determined from the information given

  • 12. 
    A light ray, traveling parallel to a concave mirror's axis, strikes the mirror's surface near its midpoint. After reflection, this ray
    • A. 

      Again travels parallel to the mirror's axis.

    • B. 

      Travels at right angles to the mirror's axis.

    • C. 

      Passes through the mirror's center of curvature.

    • D. 

      Passes through the mirror's focal point.

  • 13. 
    Light arriving at a concave mirror on a path parallel to the axis is reflected
    • A. 

      Back parallel to the axis.

    • B. 

      Back on itself.

    • C. 

      Through the focal point.

    • D. 

      Through the center of curvature.

  • 14. 
    A light ray, traveling obliquely to a concave mirror's axis, crosses the axis at the mirror's center of curvature before striking the mirror's surface. After reflection, this ray
    • A. 

      Travels parallel to the mirror's axis.

    • B. 

      Travels at right angles to the mirror's axis.

    • C. 

      Passes through the mirror's center of curvature.

    • D. 

      Passes through the mirror's focal point.

  • 15. 
    Light arriving at a concave mirror on a path through the center of curvature is reflected
    • A. 

      Back parallel to the axis.

    • B. 

      Back on itself.

    • C. 

      Through the focal point.

    • D. 

      Midway between the focal point and the center of curvature.

  • 16. 
    A light ray, traveling obliquely to a concave mirror's surface, crosses the axis at the mirror's focal point before striking the mirror's surface. After reflection, this ray
    • A. 

      Travels parallel to the mirror's axis.

    • B. 

      Travels at right angles to the mirror's axis.

    • C. 

      Passes through the mirror's center of curvature.

    • D. 

      Passes through the mirror's focal point.

  • 17. 
    Light arriving at a concave mirror on a path through the focal point is reflected
    • A. 

      Back parallel to the axis.

    • B. 

      Back on itself.

    • C. 

      Through the focal point.

    • D. 

      Through the center of curvature.

  • 18. 
    If you stand in front of a concave mirror, exactly at its focal point,
    • A. 

      You won't see your image because there is none.

    • B. 

      You won't see your image because it's focused at a different distance.

    • C. 

      You will see your image, and you will appear smaller.

    • D. 

      You will see your image and you will appear larger.

    • E. 

      You will see your image at your same height.

  • 19. 
    An object is placed at a concave mirror's center of curvature. The image produced by the mirror is located
    • A. 

      Out beyond the center of curvature.

    • B. 

      At the center of curvature.

    • C. 

      Between the center of curvature and the focal point.

    • D. 

      At the focal point.

  • 20. 
    An object is positioned between a concave mirror's center of curvature and its focal point. The image produced by the mirror is located
    • A. 

      Out past the center of curvature.

    • B. 

      At the center of curvature.

    • C. 

      Between the center of curvature and the focal point.

    • D. 

      At the focal point.

  • 21. 
    An object is situated between a concave mirror's surface and its focal point. The image formed in this case is
    • A. 

      Real and inverted.

    • B. 

      Real and erect.

    • C. 

      Virtual and erect.

    • D. 

      Virtual and inverted.

  • 22. 
    If you stand in front of a convex mirror, at the same distance from it as its radius of curvature,
    • A. 

      You won't see your image because there is none.

    • B. 

      You won't see your image because it's focused at a different distance.

    • C. 

      You will see your image and you will appear smaller.

    • D. 

      You will see your image and you will appear larger.

    • E. 

      You will see your image at your same height.

  • 23. 
    If you stand in front of a convex mirror, at the same distance from it as its focal length,
    • A. 

      You won't see your image because there is none.

    • B. 

      You won't see your image because it's focused at a different distance.

    • C. 

      You will see your image and you will appear smaller.

    • D. 

      You will see your image and you will appear larger.

    • E. 

      You will see your image at your same height.

  • 24. 
    Sometimes when you look into a curved mirror you see a magnified image (a great big you) and sometimes you see a diminished image (a little you). If you look at the bottom (convex) side of a shiny spoon, what will you see?
    • A. 

      You won't see an image of yourself because no image will be formed.

    • B. 

      You will see a little you, upside down.

    • C. 

      You will see a little you, right side up.

    • D. 

      You will see a little you, but whether you are right side up or upside down depends on how near you are to the spoon.

    • E. 

      You will either see a little you or a great big you, epending on how near you are to the spoon.

  • 25. 
    Concave spherical mirrors produce images which
    • A. 

      Are always smaller than the actual object.

    • B. 

      Are always larger than the actual object.

    • C. 

      Are always the same size as the actual object.

    • D. 

      Could be smaller than, larger than, or the same size as the actual object, depending on the placement of the object.

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