Question

Alexis is studying how lenses work. She looks through a magnifying glass and through the peephole of a door.

Which best describes a difference between the lenses used in these two devices?

The lens in the magnifying glass can produce both real and virtual images, but the lens in the peephole can produce only real images.
The lens in the magnifying glass can produce only real images, but the lens in the peephole can produce both real and virtual images.
The lens in the magnifying glass can produce both upright and inverted images, but the lens in the peephole can produce only upright images.
The lens in the magnifying glass can produce only inverted images, but the lens in the peephole can produce inverted and upright images.

Answer 1

The lens in the magnifying glass can produce both upright and inverted images, but the lens in the peephole can produce only upright images.

Explanation: A magnifying (convex) lens makes an upright virtual image when the object is within the focal length and an inverted real image when the object is beyond the focal length. A peephole (wide-angle/compound lens) is designed to present a right-side-up view to the viewer, so it produces upright images.