An Object Is Placed 21 Cm from a Concave Lens

question 3

Multiple Choice

An object is placed 21 cm from a concave lens of focal length 25 cm. What is the magnification?

• A) -0.54
• B) 0.54
• C) -0.32
• D) -0.22
• E) 0.22

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Definitions:

DNA Polymerase

An enzyme that catalyzes the synthesis of new DNA molecules by adding nucleotides to a DNA strand.

Enzyme

Organic catalyst, usually a protein, that speeds a reaction in cells due to its particular shape.

Double Helix

Double spiral; describes the three-dimensional shape of DNA.

Deoxyribose Sugar

A five-carbon sugar molecule that is a component of DNA molecules.