Chapter 18, Problem 61A

To determine

To explain: The reason for the upright image of a filmed scene.

Explanation of Solution

Introduction:

Converging lenses converges the ray of light incident on it and focuses it to a single point on the other side of that lens. It produces real and inverted image when the object is outside its focal point andit produces virtual and upright image when the object is inside the focal point.

In the movie projector, along with the converging lens, another lens is also included in its optical system that will invert the image again. Therefore the filmed scene projected from a movie projector on to a screen appear to be upright when the film is viewed.