123. If you look at yourself in a shiny Christmas tree ball with a diameter of 9.0 cm when your face is 30.0 cm away from it, where is your image? Is it real or virtual? Is it upright or inverted?
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0 cm Focal length (f) = -2.25 cm Using the lens formula: 1/f = 1/v + 1/u 1/-2.25 = 1/v + 1/-30 -0.444 = 1/v - 0.0333 1/v = -0.444 + 0.0333 1/v = -0.4107 v = 1/-0.4107 v ≈ -2.43 cm Show more…
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