Of Ibe mirror the mirror d. at 30 cm in front of the mirror 11. An image of an object produced on a screen which is about 36 cm using a convex lens. The image produced is about 3 times the size of the object. What is the size of the object? a 12 cm h. 33 cm c. 39 cm d 108 cm .
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i am really sorry but I don't know
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