Final answer:
Condensed light from a condenser passes through a film and is then focused by a lens system to form an image. Ray tracing is used to analyze the path of light through mediums with varying refractive indices, which can impact image formation.
Step-by-step explanation:
The student's question appears to be inquiring about the process by which condensed light from a condenser is used to form an image. This process typically involves light first passing through some type of object, then being focused by a lens system to ultimately form an image on a detector, such as a screen, film, or the retina in an eye.
In the context provided, condensed light from the condenser goes through the film forming rays which are then passed through a lens system or object to create an image. The rays of light are bent — a process known as refraction — to converge or diverge to form an image. If the light rays are parallel as they enter the lens, they can be brought together to focus and form a real image, which can then be captured on a film or sensor, or projected onto a screen. This image formation is essential in photography and in the functioning of the human eye.
Ray tracing is used to graphically determine and analyze the path of these light rays through different mediums, which have differing indices of refraction that alter the speed and direction of the light. When light strikes a thin film, interference may occur between reflected and refracted rays, further influencing the final image.