Question

Shyam a student has difficulty reading the blackboard while setting in
the last row. What could be the defect the child is suffering from? How
can it be corrected? Explain with help of appropriate diagram.​

Answer 1

Answer:

A student has difficulty in reading the blackboard while sitting in the last row. It shows that he is unable to see distant objects clearly. He is suffering from myopia. This defect can be corrected by using a concave lens.

Explanation:

Answer 2

shyam a student is suffering from short-sightedness or myopia.myopia can be corrected by the use of concave or diverging lens of appropriate power.

MYOPIA

________

myopia or nearsightedness occurs when the eye loses its ability to focus on far off objects as the lenses do not possess a long focal length Objects that are near are clearly visible to patients of the defects.

°SYMPTOMS OF MYOPIA

1.squiting and frowing

2.short-sighted people may suffer from tired eyes and severe headache by overstraing their eyes.

3.facing difficulty in reading the alphabet or letters from a specific distance.

TREATMENT For MYOPIA

a diverging lens can be used to fix the problem of nearsightness or myopia.in this type, the image formed is blurry as the light rays will not diverging at the right point and creating a focused image.the rays get focused before it reaches the retina.the convergence of the light rays takes place due to the cornea producing an image on the retina.