Question

sali when is 16 year old and where is a spectacle of having a power of plus two diopter answer the following question name the eye defect is suffering from state two reasons for this defect compute the focal length of a lens and state the lens used

Answer 1

The eye defect she is suffering from is Hypermetropia.

Reason:-

》Decrease in size in eyeball.
》Increase in focal length.

$f \: = \: \frac{1}{p}$

$f \: = \: \frac{1}{2}$

f = 0.5 cm

Hope it helps.

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Answer 2

Hey mate..

Here is your answer....

The person is suffering from
▪️hypermetropia
Reason for the defect
▪️the focal length of eye lens is too long
▪️the eyeball has become small
Focal length =
100/p=50cm
(since focal length is calculated in cm, we use 100/p)
Correction using
▪️convex lens

Hope this helps you