Question

1 ) how does eye lens change its focal length ?
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2 ) does eye lens form a real image or a virtual image ? ​

Answer 1

Answer:

1 . The change in curvature of the eye lens changes the focal length of the eyes. Hence, the change in focal length of an eye lens is caused by the action of ciliary muscles.

2 . The cornea and lens of an eye act together to form a real image on the light-sensing retina, which has its densest concentration of receptors in the fovea and a blind spot over the optic nerve. The power of the lens of an eye is adjustable to provide an image on the retina for varying object distances.

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