You want to project an image onto a wall a typical slide


You want to project an image onto a wall.

A typical slide for a projector is 24mm X 36 mm and the screen at the front of a room is 5m away.

A) If you wish to fill a 1.2m X 1.8m screen, what focal length of lens do you need?

B) How far will the object have to be placed from the lens?

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Physics: You want to project an image onto a wall a typical slide
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