Two Converging Lenses, the First with Focal Length 25 Cm

question 66

Multiple Choice

Two converging lenses, the first with focal length 25 cm and the second with focal length 20 cm, are separated by 30 cm. A 4.0 cm tall object is placed 50 cm in front of the first lens. What is the height of the final image?

• A) 4.0 cm
• B) 2.0 cm
• C) 8.0 cm
• D) 9.3 cm
• E) 1.0 cm

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Definitions:

Fine Motor

Skills that involve the small muscles of the body enabling functions such as writing, grasping small objects, and fastening clothing.

Gross Motor

Pertains to the use and control of the large muscles of the body, such as those in the arms and legs, for activities like walking, running, and jumping.

Handedness

The natural preference for using one hand over the other, typically seen in actions like writing or throwing.

Lateralization

Tendency of each of the brain’s hemispheres to have specialized functions.