What is the position?
What is the magnification of the image?
If you can please list the equations so that way I know for future questions. Thank you in advance.
An object is 19.9 cm from the surface of a reflective spherical Christmas tree ornament 4.94cm in diameter. What is the position of image?
2016-07-31 5:34 pm
回答 (1)
2016-07-31 5:47 pm
✔ 最佳答案
For a convex mirror, f is negative.focal length, f = -radius / 2 = (-4.94 cm) / 4 = -1.235 cm
(1/u) + (1/v) = 1/f
(1/19.9) + (1/v) = 1/1.235
1/v = - (1/1.235) - (1/19.9)
v = -1.16 cm
The image is 1.16 cm behind the surface of the ornament.
Magnification of the image = |v/u| = 1.16/19.9 = 0.0583
收錄日期: 2021-04-20 16:25:37
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