Calculate the focal length of the mirror

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Reference no: EM13323147

A woman holds a tube of lipstick 9 cm from a spherical mirror and notices that the image of the tube is upright and one fourth its normal size.

(a) Determine the position of the image. Is it in front of or behind the mirror? (Use a negative number below to indicate the image is behind the mirror.) (cm)

(b) Calculate the focal length of the mirror. (cm)

Reference no: EM13323147

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