Q56 of 234 Page 272

Which part brings the image into sharp focus on the retina? How does it do this?

Eye-lens brings the image into sharp focus on the retina. It is done by changing the thickness on the lens and hence the converging power.


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56

Which parts of the eye cause rays of light to converge on the retina ?

 56

Which part causes the greatest convergence ?

 57

An object is moved closer to an eye. What changes must take place in the eye in order to keep the image in Sharp focus?

 58

Why does the eye-lens not have to do all the work of converging incoming light rays?