What is the formula for determining image distance in a convex mirror?

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To determine the image distance for a convex mirror, the formula used is 1/s + 1/s' = 1/f, where s is the object distance, s' is the image distance, and f is the focal length. In this case, the object is 32.7 cm from the mirror, and the focal length is -10.8 cm. By substituting these values into the equation, the image distance can be calculated. The negative focal length indicates that the mirror is convex, which affects the sign of the image distance. Proper application of the formula will yield the correct image distance.
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Homework Statement



An object is placed 32.7 cm from the reflecting surface of a convex mirror having a focal length of -10.8 cm. Determine the image distance.

Homework Equations



IDK

The Attempt at a Solution


Could someone please tell me what equation I should use? Thanks!
 
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Object-image relation:

1/s + 1/s' = 1/f

where

s = object distance
s' = image distance
f = focal length
 
Thank you!
 
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