Lenses Quiz

Which statement describes characteristics of a concave lens?

• A. A concave lens diverges light and curves inward.

• B. A concave lens diverges light and curves outward.

• C. A concave lens converges light and curves inward.

• D. A concave lens converges light and curves outward.

Which statement describes characteristics of a convex lens?

• A. A convex lens diverges light and curves inward.

• B. A convex lens diverges light and curves outward.

• C. A convex lens converges light and curves inward.

• D. A convex lens converges light and curves outward.

As opposed to concave lenses, which characteristic of convex lenses makes them useful in microscopes?

• Convex lenses can produce images larger than objects.

• Convex lenses can produce upright images.

• Convex lenses cause light rays to spread out.

• Convex lenses cause light rays to refract.

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.

Byron draws a ray diagram to show how an image is produced by a lens. Which describes Byron's error?

• The image should be smaller than the object.

• The incident ray labeled X should continue moving in the same direction.

• The image should be inverted instead of upright.

• The incident ray labeled Y should continue moving in the same direction.

A ray diagram shows an object placed in front of a concave lens beyond 2F. Which are characteristics of the image that is produced?

• real and inverted

• virtual and inverted

• upright and larger than the object

• upright and smaller than the object

Which letter represents the location of the image produced by the lens?

• W

• X

• Y

• Z

When using the lens equation, a negative value as the solution for di indicates that the image is

• real.

• virtual.

• upright.

• inverted.

A 14 cm object is 20 cm from a concave lens that has a focal length of -10 cm. The distance of the image from the lens, rounded to the nearest tenth, is...

• 6.7 cm

• -6.7 cm

• 7 cm

• -7 cm

A 6 cm object is 8 cm from a convex lens that has a focal length of 2.7 cm. The image is 4 cm from the lens. The height of the image is...

• -3 cm

• 3 cm

• 9 cm

• -9 cm