A thin converging lens is moved closer to a nearby object.

Solution 25Q:

        We have to determine the change in nature of real image, formed due to actual convergence of the ray of light by the thin converging lens, if the lens is moved closer to a nearby object.

Step 1 of 3

Concept:

The point where the incident parallel rays come to a focus after reflection is called the focal point of the mirror. The distance from the center of the mirror to the focal point is called focal length, denoted by  .

Distance of the object is measured by using the mirror equation, which is given as below:

                        …(1)

Here,    Distance of the object from the pole

 Distance of the image from the pole

If a converging lens is moved closer to a nearby object, the size and position of the real image changes depending on the position of the object from the lens.