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

What is the lens?

A lens is a transmissive optical device which focuses or disperses a light beam by means of refraction. A simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses (elements), usually arranged along a common axis

A lens can focus light to form an image, unlike a prism, which refracts light without focusing. Devices that similarly focus or disperse waves and radiation other than visible light are also called lenses,

Lenses are classified by the curvature of the two optical surfaces. A lens is biconvex (or double convex, or just convex) if both surfaces are convex. If both surfaces have the same radius of curvature, the lens is quasiconvex

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

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