Question

A lens with a focal length of f = +100mm is used to project a slide...

A lens with a focal length of f = +100mm is used to project a slide of a smiley face on the wall.


A) Where do you put the smiley face so that it can be projected on a nearby wall with a magnification of 5x?
B) Draw a ray diagram to illustrate the light path.

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Answer #1

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