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a convex mirror has a focal length of -20 cm. a. determine an object location for...

a convex mirror has a focal length of -20 cm.

a. determine an object location for which the image will be one half the size of the object

b. draw a ray diagram for this situation

c. the mirror is replaced with a thin lens in exactly the same position. the image and object do not move. find the focal length of this thin lens.

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