Question

To focus the image of a nearby object on the retina of an eye:; A. the distance between eye-lens and retina is increased; B. the distance between eye-lens and retina is decreased; C. the thickness of eye-lens is decreased; D. the thickness of eye-lens is increased

Answer 1

Answer:

When focusing on a nearby object on the retina of the eye c) the thickness of the lens is decreased.

There is no change in the distance between the retina and the eye lens as the distance is fixed. But eye lens manages itself to focus on the object.

When the object is nearby contraction in ciliary muscle takes place allowing the eye lens to decrease its thickness and hence nearby object is viewed properly.