Physics
Physics
Problem
12. An object is placed at a distance of 10 cm from a convex mirror of focal length 15 cm . Find the position and nature of the image.Intuitive explanation
The key to mirror problems is the mirror equation: it relates object distance, image distance, and focal length in a way that reveals where light rays converge (or appear to come from). For a convex mirror, the focal length is negative, which automatically tells you the image will be virtual, upright, and smaller. Plug in your values carefully, solve for image distance, and interpret the sign—a negative result confirms the image sits behind the mirror where it appears to form.
Intuitive explanation
The key to mirror problems is the mirror equation: it relates object distance, image distance, and focal length in a way that reveals where light rays converge (or appear to come from). For a convex mirror, the focal length is negative, which automatically tells you the image will be virtual, upright, and smaller. Plug in your values carefully, solve for image distance, and interpret the sign—a negative result confirms the image sits behind the mirror where it appears to form.