In order for a person to "see" an object, light waves pass through the ___________.
A. cornea
B. iris
C. lens
D. retina

Question

In order for a person to "see" an object, light waves pass through the ___________.
A. cornea
B. iris
C. lens
D. retina

anonymous · Answer

passes through the cornea 
iris surrounds the region passed through
goes through the lens
hits the retina


one choice or two allowed?

anonymous · Answer

A or B right

anonymous · Answer

B is not right, in that it does not penetrate the iris material, but perhaps is right if you consider the open central portion. What's wrong with C?

anonymous · Answer

there is nothing  wrong with C 
i want to say it is C but it could be B

anonymous · Answer

So we could argue that D is out, A and C are in and B is questionable.

lastdaywork · Answer

I think B is a better option..Iris controls the amount of light entering the eye; light rays are going to pass through the lens/cornea anyway..

anonymous · Answer

yes i want to say it is B or C but i want to say it is more B then C

anonymous · Answer

so it is B