We wish to obtain an erect image of an object, using a concave mirror of focal length 15 cm. What should be the range of distance of the object from the mirror ? What is the nature of the image ? Is the image larger or smaller than the object ? Draw a ray diagram to show the image formation in this case.

Explanation

`{:("Concave mirror",,),(f=-15 cm,u=?,v=?),(r=2f=-30 cm,,"Nature of image = Erect"):}`
To obtain an erect image in the case of a concave mirror, the object should be placed between F and pole. The object should be placed within a distance of 15 cm from the pole of the concave mirror.

Image is formed behind the concave mirror and the image formed would be virtual, erect and highly enlarged.