Question

It is said that a real image is inverted, also it is said that an image formed by a cinema hall is a real image. Why are we not able to see images inverted In a cinema hall?

Answer 1

Movie projectors

1. Movie projectors are devices that can display images on a screen that is typically plain and white in color.
2. Movie projectors can be found in a variety of locations, such as movie theatres and auditoriums, however, the majority of them have been replaced by modern technological gadgets.

Image formation by movie projectors

1. Because a movie projector uses several mirrors, it produces realistic visuals.
2. When the light from the reel is focused on the first lens, it creates a true and inverted image.
3. The light then strikes the screen again, forming an upright image on the screen.
4. The images created each time are inverted, and this procedure is repeated two times, yielding an erect image.
5. Concave mirrors are used to focus the light at first, creating a virtual picture, and then a real and erect image is generated with the help of another concave mirror.