Eyes: a Machinist with Normal Vision Has a near Point

question 29

Multiple Choice

Eyes: A machinist with normal vision has a near point at 25 cm. The machinist wears eyeglasses in order to do close work. The power of the lenses is + 1.75 diopters. With these eyeglasses, what is the near point of the machinist?

• A) 17 cm
• B) 14 cm
• C) 10 cm
• D) 21 cm
• E) 24 cm

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Definitions:

Twin Studies

Research designs that compare monozygotic (identical) and dizygotic (fraternal) twins to assess genetic and environmental influences on physical and psychological traits.

Trait

A distinguishing quality or characteristic, typically one belonging to a person.

Behavior

The observable actions or responses of humans or animals in response to external or internal stimuli.

Genes

Units of heredity made up of DNA that act as instructions to make molecules called proteins, influencing the development, functioning, and reproduction of organisms.