Pretest

Question 1

When using the magnification equation, a value greater than 1 as the solution for cap m indicates that the image is

Revolt · Accepted Answer

larger than the object.

Question 2

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?

Revolt · Accepted Answer

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

Question 3

Which diagram best represents a convex lens?

Revolt · Accepted Answer

Image with description A biconvex lens.

Question 4

Which shows the correct lens equation?

Revolt · Accepted Answer

1 over f is equal to the fraction with numerator 1 and denominator d sub o plus the fraction with numerator 1 and denominator d sub i

Question 5

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

Revolt · Accepted Answer

upright and smaller than the object

Question 6

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

Revolt · Accepted Answer

Convex lenses can produce images larger than objects.

Pretest Answers

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