Where will the image form when we place an object, on the principal axis of a concave mirror at a point between focus and center of curvature? (AS1)

To find the image, we have to use the graphical method which states the following rules:

• A ray parallel to the principal axis, after reflection, passes through the focus.

• A ray incident towards or away from the center of curvature is reflected back along its original path.

• A ray incident at pole at an angle i is reflected at an angle i.

• A ray through the focus is reflected parallel to the axis.

So following the above rules, draw the ray diagram of the convene mirror when the object is placed between focus & center of curvature.

Draw a ray parallel to the principal axis from the tip of the object AB. The reflected ray will pass through the focus. Now, draw a ray passing through focus and the reflected ray will be parallel to principal axis. Draw the image where the two reflected rays meet. In the figure, BA is the image formed. Through the ray diagram we get to know that when an object is placed between center of curvature (C) & focus (F) then image is formed between infinity & center of curvature. The nature of image is real, inverted & enlarged.