The Focal Lengths of the Objective and the Eyepiece of a Microscope

question 6

Multiple Choice

The focal lengths of the objective and the eyepiece of a microscope are 0.5 cm and 2.0 cm, respectively, and their separation adjusted for minimum eyestrain is 6.0 cm. If the microscope is focused on a small object, what is the distance between the object and the objective lens?

• A) 0.6 cm
• B) 0.3 cm
• C) 0.4 cm
• D) 0.8 cm
• E) 0.7 cm

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Definitions:

Quantity Demanded

The total amount of a good or service that consumers are willing and able to purchase at a specific price level in a given period.

Normal Good

A normal good is one whose demand increases as consumer income rises and decreases when consumer income falls, holding other factors constant.

Inferior Good

A type of good for which demand decreases as the income of consumers increases, opposite to normal goods.

Complements

Complements are goods or services that are used together, so that the consumption or use of one increases the demand for the other.