You've been asked to set up a demonstration that uses a concave spherical mirror to form images under different conditions. You have a mirror, which has a radius of curvature of 60 cm. Looking at the size of the classroom, you decide that placing the object at distances of 90 cm and 20 cm from the mirror will make good examples. To verify this, you calculate, for each position, the location and magnification of the image, as well as whether it will be possible to project the image on a screen. Yu must solve this problem using a good diagram and geometry. It is not permissible to use the lens/mirror equation.

You've been asked to set up a demonstration that uses a concave spherical mirror to form images under different conditions. You have a mirror, which has a radius of curvature of 60 cm. Looking at the size of the classroom, you decide that placing the object at distances of 90 cm and 20 cm from the mirror will make good examples. To verify this, you calculate, for each position, the location and magnification of the image, as well as whether it will be possible to project the image on a screen. Yu must solve this problem using a good diagram and geometry. It is not permissible to use the lens/mirror equation.