Chapter 23, Problem 24Q

To determine

To analyze:

That the real images and virtual images can be projected on a screen. Also, to discuss that if both the real and virtual images can be photographed.

Answer to Problem 24Q

Solution:

The real image can be projected on a screen. The virtual images cannot be projected on a screen. Both the real and the virtual images can be photographed.

Explanation of Solution

The real image:

The image is formed at the point where the reflected or the refracted rays pass through the point. The image is real existence and so this can be seen on a screen, white paper.

The real image formed by the converging lens is shown by

The virtual image:

is an image that is formed at the point where the reflected or the refracted rays does not pass through the point rather appears todiverge from the point. The image is not real existence and so this cannot be seen on a screen, white paper.

The real image formed by the diverging lens is shown by

Real images can be projected onto a screen. In this situation, real light rays actually focus at the position of the image, which can be seen on the screen.

But virtual images cannot be projected onto a screen. In this situation, no real light rays are crossing at the position of the virtual image, and so they cannot be seen on a screen.

Both real images and virtual images can be photographed. The lens in the camera are designed to focus either diverging or converging light rays down onto the film.(Similar to a human eye, which can also focus either diverging or converging light rays down onto our retina )