Chapter 17, Problem 74A

To determine

To discuss: All the possible arrangements for using a spherical mirror, either concave or convex, to form a real image.

Explanation of Solution

Introduction:

Real image are those image that can be seen when the screen is loacted in the plane of convergence. It is the collection of focus points made by the converging rays.

Concave mirror is the mirror in which inner surface is acting as the reflecting surface. The light rays reflected from the concave mirror are converging and hence concave mirror is also called converging mirror. When an object is placed very close to the concave mirror the image produced will be enlarged and virtual. If the distance between the object and the mirror is increased the image size decreases and it becomes real image.

Convex mirror is the mirror in which outer surface is acting as the reflecting surface. The light rays reflected from the convex mirror are diverging and hence convex mirror is also called diverging mirror. The image formed by the convex mirror is always virtual, erect and diminished regardless of the distance between the mirror and the object, because of its diverging nature. Real images can be obtained by placing the object away from the focal point of a concave mirror. It is impossible to get a real image using a convex mirror.