An object $11\mathrm{.}0$ cm tall is placed at the zero mark of a meterstick. A spherical mirror located at some point on the meterstick creates an image of the object that is upright $4\mathrm{.}00$ cm tall, and located at the $41\mathrm{.}0-cm$ mark of the meterstick.

$($a$)$ Is the mirror convex or concave?

convex

concave

$($b$)$ Where is the mirror?

At the $$ cm mark. What kind of mirror produces an upright and diminished image?

$($c$)$ What is the mirror's focal length?

$q,$ cm The mirror equation will enable you to find the focal length.

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