posted by lindiwe .
The spherical side mirror on a car is convex and has a radius of curvature of 25 cm. Another car is following, 20 m behind the mirror. If the height of the car is 1.6 m, how tall is its image?
1/do+1/di=1/f is the equation, solve for di.
then, having di (remember the sign conventions for convex mirrors),
f=-R/2; f=-25/2; f=-12.5