A Person's Eye Lens Is 2

question 48

Short Answer

A person's eye lens is 2.7 cm away from the retina.This lens has a near point of 25 cm and a far point at infinity.
(a)What must the focal length of this lens be in order for an object placed at the near point of the eye to focus on the retina?
(b)What must the focal length of this lens be in order for an object placed at the far point of the eye to focus on the retina?

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Definitions:

Tchebysheff's Theorem

A statistical rule stating that for any data set, regardless of distribution, a minimum proportion of values lie within a certain number of standard deviations from the mean.

Variance

A measure of the dispersion of a set of data points around their mean, indicating how spread out the data are.

Mean

Calculating the average involves summing all numbers in a set and then dividing by the quantity of those numbers.

Probability Distribution

A mathematical function that provides the probabilities of occurrence of different possible outcomes in an experiment.