The Lens Formula Relating the Image Distance, P , to the Focal

question 66

Multiple Choice

The lens formula relating the image distance, p , to the focal length, f , and object distance, s , is
The magnification of a lens is
A magnifying glass with focal length 15 cm is placed 10 cm above a stamp.  The magnification of the magnifying glass in is

• A) +3.
• B) -3.
• C) +15.
• D) -15.
• E) +30.

---

Definitions:

Toxicity

The degree to which a substance can cause harm to an organism, ranging from minor effects to severe damage or death.

Pediatric Patients

Children and infants who are receiving medical treatment.

Vaccine

A preparation made from microorganisms and administered to a person to produce reduced sensitivity to or increased immunity to, an infectious disease.

Side Effects

Unintended and often adverse reactions to a medication or medical treatment.