A Person Uses Corrective Glasses of Power -8

question 1

Short Answer

A person uses corrective glasses of power -8.5 D that are worn 2.0 cm from her eye.
(a) Is she nearsighted or farsighted?
(b) What is her far point without glasses?

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Definitions:

Parenchyma

Plant tissue composed of the least-specialized of all plant cells; found in all organs of a plant.

Collenchyma

Plant tissue composed of cells with unevenly thickened walls; supports growth of stems and petioles.

Sclerenchyma

Plant tissue composed of cells with heavily lignified cell walls; functions in support.

Meristematic Tissue

Plant tissue composed of undifferentiated cells capable of continuous division, responsible for growth and the generation of new organs.