one word
1)Amount of light entering into eye is controlled by__
choice
:none of the above
:Iris
:pupil
:retina
2)power of a lens -4D then it's focal length is__
:4m
:-2.5m
:0.25m
:-40m
3) The power of lens depend on focal length is ___(whether true or false)for 3rd question only ...hope you will help soon.i want urgent pls help me..
Answers
Answered by
1
Answer:
The iris opens and closes to control the amount of light entering the eye through the pupil. The pupil is the opening in the center of the iris where light enters the eye.
Similar questions