Question

1
Veterie C POD
Find the focal length of a convex spherical mirror
which produces an image 1/6
th the size of an object
located 0.12 m from the mirror??​

Answer 1

Convention: virtual distances are negative. Focal lengths of convex mirrors are negative. We should expect a negative focal length. Convex mirrors produce virtual images of real objects.

The wording of the question is confusing. I am not sure if the object is at 12 cm or the image is. I will take it that the object is:

Do = - 6 Di → Di = - 2 cm

1/f = 1/12 - 1/2 → f = - 12/5 cm matches the convention.

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Answer 2

Answer:

here is the answer

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12 upon 5