Some rearview mirrors produce images of cars to your rear that are smaller than they would be if the mirror were flat. Are the mirrors concave or convex? What is a mirrors radius of curvature if cars 20.8 m away appear 0.33x their normal size?

Concave mirror,-20.48m

Explanation:

Concave mirrors-This is because the objects are made smaller by the mirror, so they appear farther away.

#we find the image distance from the magnification:

#We find the focal length from:

r=2f=-10.24m*2=-20.48m

#The mirror has a negative radius(-20.48m) of curvature since its vertex  lies to the right of the center of curvature

f=gm1m2/d^2 it d

f is force g is gravitaiton constant, m1 is mass of first object, m2 is mass of second object. d is distance between two object