Question

focal length of eye lens is
a) fixed
b) variable
c) neither fixed nor variable
d) sometimes fixed sometimes variable
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Answer 1

Answer:

i think option D is right even I am not sure

Answer 2

● The focal length of eye lens is variable that is option B.

● Despite the fact that the picture separation for example the separation between the retina and eyelens can't be changed a typical human eye can see far off articles just as the close by objects plainly.

● This is conceivable because of the intensity of convenience.

● An eye can center the pictures of the far off items just as close by objects on the retina by changing the central length of its focal point.

● The central length of the focal point can be changed by activity of ciliary muscles.