Question

an object is placed at a distance of 25cm away from a converging mirror of focal length 20cm discuss the effect on the nature and the position of the image if the position of the object changes from 25 cm to 13 cm.​

Answer 1

At the first instance the distance of image is negative so the image is formed on the same side of the object and is real inverted and highly magnified. This happens because the object is kept at focus

At the second instance the distance of image is positive so the image is formed on the opposite side of the object and is virtual erect and enlarged (but smaller than the first one).This happens because the object is kept between focus and pole