Question

A convex mirror, like the passenger-side rearview mirror on a car, has a focal length of -2.9 m . An object is 5.8 m from the mirror.

Use ray tracing to determine the location of its image. How far is the image from the mirror? Input positive value if the image is on the same side from the mirror as an object and negative if the image is on the other side.

Is the image upright or inverted? Is it real or virtual?

Answer 1

f = -2.9 m

u = 5.8 m

tM bfect (F Convex mǐMen

v = fu/(u-f) = (-2.9*5.8)/(5.8+2.9) = - 5.8/3 = - 1.933 m

So distance of image from mirror = - 1.933m ( in opposite side as object)

m = -v/u = 1.933/5.8 = 0.33

As magnification is positive, the image is upright.

The image is behind of mirror, so it is virtual