Section C: Give a short answer to the question given below.
The diagram below shows a special case of an eye defect.
(i) What is the defect that is shown in the figure?
(ii) State one cause for such a defect?
(iii) Explain with reason if a concave lens can be used to correct the defect.
(i) What is the defect that is shown in the figure?
(ii) State one cause for such a defect?
(iii) Explain with reason if a concave lens can be used to correct the defect.
i. The image shows a case of .
ii. The causes this defect, also known as . can be seen clearly, but cannot be seen clearly due to this defect. The distance between the eye lens and the retina is , or the focal length of the eye lens is . Due to this, the image of nearby objects is formed the retina.
iii. would diverge the rays coming to the eyeball and will push the image even further, but a should be used which will help to converge the rays and create the image at the exact place on the retina.
ii. The causes this defect, also known as . can be seen clearly, but cannot be seen clearly due to this defect. The distance between the eye lens and the retina is , or the focal length of the eye lens is . Due to this, the image of nearby objects is formed the retina.
iii. would diverge the rays coming to the eyeball and will push the image even further, but a should be used which will help to converge the rays and create the image at the exact place on the retina.