Question

In a projector, an object (an image on an LCD screen) is 5.1 cm from a...

In a projector, an object (an image on an LCD screen) is 5.1 cm from a lens with focal length 5 cm. Draw the ray diagram for this situation and calculate the distance to the image. What is the magnification? Is the image real or virtual?

Homework Answers

Answer #1

The lens formula gives us

So, the image distance is 255 cm.

Magnification is given by

The negative sign signifies the inverted image.

As the image is another side of the lens (than the object), the image is real.

The Ray Diagram:

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