A Convex Lens Has Focal Length F

question 73

Multiple Choice

A convex lens has focal length f.If an object is placed at a distance of 2f from the lens on the principal axis,the image is located at a distance from the lens

• A)of 2f.
• B)between f and 2f.
• C)of f.
• D)between the lens and f.
• E)of infinity.

---

Definitions:

Specific Immunity

Immunity that is characterized by the body's ability to recognize and specifically respond to particular pathogens or foreign substances.

Antigen-Antibody Complexes

Complexes formed when antibodies bind to specific antigens, triggering immune responses and playing a critical role in pathogen neutralization and removal.

Complement

A complex system of proteins in the blood that works with the immune system to help clear pathogens from an organism.

Antibodies

Proteins produced by the immune system in response to foreign substances, which they specifically bind to and help eliminate from the body.