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aeropa84 aeropa84
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Posts: 137
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8 months ago

An object is placed 60 cm in front of a mirror and the image is upright and ¼ the size of the object. What is the focal length of the mirror?



−12 cm



−20 cm



−45 cm



−75 cm



some positive value not given

Textbook 
College Physics

College Physics


Edition: 5th
Author:
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sbbaltsbbalt
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8 months ago
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aeropa84 Author
wrote...

8 months ago
I appreciate what you did here, answered it right Smiling Face with Open Mouth
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Yesterday
Thanks
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2 hours ago
Good timing, thanks!
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