In: Physics
Note that
1/f = 1/do + 1/di
where
f = focal length = 14 cm
do = object distance = 17.6 cm
di = image distance
Thus, solving for di,
di = 68.44444444 cm
which is actually projected at the back of the convex mirror, 35.2 - 68.44 = -33.344 cm = do.
Thus, note that
1/f = 1/do + 1/di
where
f = focal length = -5.6 cm
do = object distance = -33.244444 cm
di = image distance
Thus, solving for di,
di = -6.73 cm