Chapter 13.2, Problem 8R

To determine

The comparison of image of an object less than one focal length with the object more than two focal lengths from the convex lens.

Explanation of Solution

Introduction:

A convex lens is thicker at the inside and thinner at the outer ends of the lens. It is called as converging lens.

When the object is less than one focal length from the convex lens, the image so formed is virtual and upright in nature and the size of the image is larger than the size of the object.

When the object is more than two focal lengths from the convex lens, then the image is real and inverted in nature and the size of the image is smaller than the size of the object.

Conclusion:

Hence, the image is virtual and upright when the object is less than one focal length and the image is real and inverted when the object is more than two focal lengths from the convex lens.