What Is the Focal Length of a Magnifying Glass That

question 23

Multiple Choice

What is the focal length of a magnifying glass that produces an angular magnification of 7.0 x when used by a person with a near point at 28 cm?

• A) 2.0 cm
• B) 3.0 cm
• C) 4.0 cm
• D) 5.0 cm
• E) 6.0 cm

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Definitions:

Permafrost

Permanently frozen ground that occurs in high latitude regions of the Earth, consisting of soil, gravel, and sand usually bound together by ice.

Rock Fall

A mass-wasting process whereby large rocks and smaller pieces of bedrock detach and fall onto the ground.

Scarp

A steep slope or cliff, especially at the edge of a plateau or separating areas of land at different elevations.

Sliding Block

A term often used in physics and engineering to describe a block or mass that moves along a surface, typically used in the study of friction and motion.