The Objective Lens in a Laboratory Microscope Has a Focal

question 35

Multiple Choice

The objective lens in a laboratory microscope has a focal length 4.00 cm and provides an overall magnification of 250.What is the focal length of the eyepiece if the distance between the two lenses is 32.0 cm?

• A)32.0 mm
• B)25.0 mm
• C)16.0 mm
• D)8.00 mm
• E)4.00 mm

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Definitions:

Lymph Nodes

Small, bean-shaped structures that are part of the lymphatic system, serving as filters for harmful substances and a site for immune cell activation.

Lymphoid Cells

Cells that are part of the immune system, including B cells, T cells, and natural killer cells, which play roles in adaptive and innate immunity.

Lymph Filter

A term not commonly used in medical literature but may refer to lymph nodes which filter harmful substances from the lymph fluid.

Lymphatic System

A vital part of the immune system, consisting of organs, ducts, and nodes that transport lymph, a fluid containing infection-fighting white blood cells, throughout the body.