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1- The pupil of the eye controls   Select one: a

Physics

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1- The pupil of the eye controls

 

Select one:

a. the amount of light reaching the retina.

b. the far point.

c. none of these

d. the focal length of the eye.

e. the near point.

 

2-The image produced on the retina by the lens of the eye, when properly focused, is

 

Select one:

a. real and inverted.

b. virtual and inverted.

c. virtual and upright.

d. real and upright.

 

3-The eye focuses by

 

Select one:

a. moving both the lens and the retina.

b. changing the focal length of the lens.

c. moving the retina.

d. changing the index of refraction of the vitreous fluid.

e. moving the lens.

 

4-The corrective lenses of a person suffering from which of the following vision ailments could be used to start a fire by focusing sunlight?

 

Select one:

a. myopia

b. no eyeglass lenses can be used to make a fire

c. astigmatism

d. cataracts

e. hyperopia

 

5-The loss of accommodation that comes with aging is called

 

Select one:

a. macularopia.

b. retinalopia.

c. hyperopia.

d. myopia.

e. presbyopia