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Chapter 31: Problem 9

Is the image on a movie screen real or virtual? How do you know?

Short Answer

Expert verified
The image projected on a movie screen is a real image. This is because it is formed by the actual convergence of light rays that can be projected onto a screen.

Step by step solution

01

Define Real and Virtual Images

A real image occurs when light rays physically converge to a point. They can be projected onto a screen because the light rays propagate through the space where the image appears to be located. In contrast, a virtual image is an image that cannot be projected onto a screen. It is formed by the perceived convergence of light rays and the light rays do not actually reach the location of these images.
02

Understanding the working of a Movie Projector

A movie projector operates by projecting light through a film, focusing that light, and projecting it onto a screen. The light rays are physically passing through the lens of the projector and converging onto the screen thereby forming an image.
03

Application of Definition to the Movie Screen

Following the definition, since the image on the screen is formed by physical convergence of light rays and can be projected onto the screen, it is categorized as a real image.

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Most popular questions from this chapter

An object's image in a 27 -cm-focal-length concave mirror is upright and magnified by a factor of \(3 .\) Where is the object?

A lens has focal length \(f=35 \mathrm{cm} .\) Find the type and height of the image produced when a 2.2 -cm-high object is placed at distances (a) \(f+10 \mathrm{cm}\) and (b) \(f-10 \mathrm{cm} .\)

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Under what circumstances will the image in a concave mirror be the same size as the object?
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