I am in a great confusion about this question. In our school, we have been taught that:
- A real image is an image which can be obtained on a screen. It is always inverted.
- A virtual image is an image which cannot be obtained on a screen. It is always erect.
Example: Plane mirrors form a virtual image but a convex lens forms a real image.
I have understood the simple examples but I am confused about this example of projectors. I have done the experiment myself and I found that:
- The image formed can be obtained on the wall.
- The image formed is erect.
So is it a real or a virtual image?
1) If it is a real image, why can it be formed with a mirror? And why is it erect?
2) If it is a virtual image, why can I get it on a screen?
I read many pages on the internet about real and virtual images, I can understand them and I think that it is a real image. However, I am still unsure about the answer.
So please clear my doubts.