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Physics

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A spherical glass ornament is 7.00 cm in diameter. An object is placed 11.8 cm away
from the ornament.
a) Where will its image form?

b) What is the magnification of the image

  • Physics -

    The focal length of the convex mirror surface is
    f = -R/2 = -1.75 cm

    For the image distance di, use
    1/do + 1/di = 1/f = -1/1.75
    1/di = -1/1.75 -1/11.8 = -0.6562
    di = -1.524 cm (1.524 cm behind the bulb surface)
    Magnification = |di/do| = 1.524/11.8
    = 0.129

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