4x

Question

F
AA
人人
A convex lens is shown here. According to the model, a lens concentrates rays of light to a single focus point after passing through the lens. Which item below most likely uses a convex lens to perform its typical function?
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A
spotlights
B
movie projectors
corrective eyeglass lenses
一x
flashlights and binoculars

Answer 1

A convex lens is designed to converge light rays to a single focal point. Among the options provided, the most relevant application of a convex lens would be:

B: movie projectors

Movie projectors typically use convex lenses to magnify and project film images onto a screen. While corrective eyeglass lenses (which can also be convex) help to focus light for individuals with vision issues, movie projectors are more directly associated with the use of convex lenses in standard applications.