The Iris Diaphragm ________

question 33

Multiple Choice

The iris diaphragm ________.

• A) focuses light on specimen
• B) separately magnify specimen
• C) holds the specimen in place
• D) controls light intensity via adjustable opening

---

Definitions:

Perfectly Inelastic

A situation in demand where the quantity demanded does not change in response to a change in price; represented graphically as a completely vertical demand curve.

Demand Curve

A graphical representation showing the relationship between the price of a good or service and the quantity demanded by consumers at various prices.

Supply Curve

A graphical representation of the relationship between the price of a good and the quantity of the good that suppliers are willing to sell.

Perfectly Inelastic Demand

A situation in which the demand for a product does not change as the price changes.