Alferd Posted April 19, 2023 Share Posted April 19, 2023 (edited) There are sunlight reflection on the wall which from the convex mirror. The reflection area is two times larger than original size of concave mirror. Can I know how to calculate the focal length of this convex mirror? Thank you for advance. Edited April 19, 2023 by Alferd Edit some text Link to comment Share on other sites More sharing options...
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