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Section 11

By Marjorie Armstrong,2014-07-02 14:56
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Section 11

    Section 11.6 Using Curved Mirrors (pages 326 328)

    1. A is a mirror that curves inwards. The image formed

    by this mirror depends on how far away the object is from the

     .

    2. How can you describe light rays that come together at a focal point?

    3. If an object is far from a concave mirror, the image is small and

     . This image is considered to be what type of image, virtual or real? 4. If an object is close to a concave mirror, then the image appears to be

    larger than the object and is . This image is considered

    to be what type of image, virtual or real?

5. Give some examples of uses for concave mirrors.

    6. There are other kinds of radiation energy that we can’t see that exist.

    Explain the shape of satellite dishes that receive radio signals from

    satellites in orbit around the Earth.

    7. What type of image would you expect to see if you looked at yourself in

    the bowl of a spoon?

    8. A is a mirror that curves outwards. It reflects parallel

    light rays as if they came from the focal point the mirror.

9. The image of an object in a convex mirror will always be

    and from the mirror than the object. This image is

    considered to be what type of image, virtual or real?

    10. When light rays spread apart after being reflected, they are considered to

    be what?

11. What are some examples in life that use convex mirrors?

12. Why are large convex mirrors used for security in stores? (Hint what

    happens to the light reflecting off of a shoplifter if the storekeeper can see

    the thief?)

    13. Briefly describe how the principal focus in a concave mirror is the same

    and how it is different from the principal focus in a convex mirror.

    14. For each situation, state whether the image produced is real or virtual.

    Explain how you know.

    a) A girl is standing close to a cosmetic mirror while applying lipstick.

    b) An astronomer is looking at an image of the Moon through her

    telescope, which has a concave mirror.

    c) A clerk in a drugstore is looking at the image of a customer in a

    surveillance mirror.

    15. Which of the following mirrors can produce an upright image: plane mirror, convex mirror, concave mirror?

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