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QUESTION 1

1. In the equation to determine the total magnification for amicroscope, what does N stand for?

   	1.	The index of refraction of the eyepiece.
   	2.	The index of refraction of the objective.
   	3.	The average index of refraction of both lenses combined withdiffraction.
   	4.	The number of lenses on the microscope.
   	5.	The distance the user can see an image with a relaxed eye.
   	6.	The next point of contact for the observer diffracted lens.

3 points   

QUESTION 2

1. You sometimes see a fringe of color around an image seen in asimple lens. This is caused by

   	1.	differential chronometry.
   	2.	diffractive chronometry.
   	3.	spherical aberration.
   	4.	chromatic aberration.
   	5.	differential aberration.

3 points   

QUESTION 4

1. You can correct nearsightedness by placing a _______ lens infront of the eye

   	1.	compact
   	2.	extended
   	3.	final
   	4.	initial
   	5.	converging
   	6.	diverging

3 points   

QUESTION 7

1. If the focal length of a person's eye is less than thatdistance from the lens to the retina, then

   we say that person is

   	1.	nearsighted
   	2.	farsighted
   	3.	hyperopic
   	4.	astigmatic

3 points   

QUESTION 8

1. We can use lenses to correct for a person nearsightedness by

   	1.	forming an image of distant objects between the person's eye andtheir far point
   	2.	forming an image of distant objects the focal point of theeye
   	3.	forming an image of distant objects between the object and theirfar point
   	4.	magnifying the image of all distant objects

3 points   

QUESTION 9

1. When the eye views a distant object, the ciliary muscles are______ allowing

   the eye's lens to be more __________

   	1.	tense, curved
   	2.	relaxed, flat
   	3.	compact, narrow
   	4.	retracted, open

3 points   

QUESTION 10

1. The shortest distance at which the eye can focus sharply on anobject is referred to

   as the

   	1.	near point.
   	2.	radius of curvature.
   	3.	focal length.
   	4.	ciliary distance.