Modeling with Rational Functions — Unit test

Question 520 • Crowley Credit Recovery Algebra II B

Which accurately explains concave and convex lenses?

Answer

With both concave and convex lenses, placement of the object dictates which side of the lense the image will appear.

With both concave and convex lenses, placement of the object does not dictate which side of the lense the image will appear.

With concave lenses, placement of the object does not dictate which side of the lense the image will appear, but with convex lenses, they do.

With convex lenses, placement of the object does not dictate which side of the lense the image will appear, but with concave lenses, they do.

Explanation

A concave (diverging) lens forms a virtual image on the same side as the object, regardless of how far away the object is. A convex (converging) lens can form a real image on the opposite side when the object is beyond its focal point, or a virtual image on the object’s side when it is inside the focal point. So object placement affects which side the image appears for a convex lens, but not for a concave lens.

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