53. A slide projector has a converging lens whose focal length is 105.00 mm. (a) How far (in meters) from the lens must the screen be located if a slide is placed 108.00 mm from the lens? (b) If the slide measures 24.0 mm x 36.0 mm, what are the dimensions (in mm) of its image?

 

the lens equation tells us

Solve for image distance

 

 

 

 

Magnification gives us

Solve for image height

So for width

 

So for height

 

Minus signs indicate inverted or upside down images!

 

 

 

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This page last updated on July 6, 2018