Question

Fig. 7.32
t
Study it and answer the following questions :
(1) Name the defect shown in the figure.
(Practice Activity Sheet – 3)
(2) Give two possible reasons for this defect
of eye in human beings.
(3) Name the type of lens used to correct the
eye defect.
(4) Draw a labelled diagram to show how the
defect is rectified by using the lens.
For reference, see the answer to [Q. 10 (6).]
lete the table.
(Practice Activity Sheet - 1)​

Answer 1

Yes I will do that I will call u r and r to see how you can help you out ok thank you for

Answer 2

Answer:

Answer

(a) The figure depicts myopia defect also known as nearsightedness

(b) The possible reason for this defect is:

(1) It occurs when the eye grows too long from front to back as instead of focusing on the retina the lens of the eye focuses the image in front of the retina

(2) It can also occur when the cornea is too curved for the length of the eyeball or a lens that is too thick.

(c) The parts labelled in the diagram are as follows:

1. is vitreous humour

2. is the blind spot

3. is Lens

4. is Pupil

(d) The lens used to correct myopia is a concave lens, the concave lens diverge the light rays, and as a result, the image will form on the retina.

(e) The attached figure shows how myopia is rectified

solution