Question

Image is formed for the short sighted person at
(A) Retina
(B) Before retina
(C) Behind the retina
(D) Image is not formed at all

Answer 1

Hint : Short sightedness or myopia is an eye where the near vision range is clear whereas the long vision is blurred. Retina is the part of the eye where the image is formed. Using this, understand what happens in the myopic conditions and conclude your answer.

Complete Step by Step answer:
 In optics, the person with a normal vision can see both near and distant objects within the range clearly. This is because the image of the objects are perfectly formed on the retina where the brain receives the information of the image. What happens to a person with eye defects?
Myopia is a defect where the person can get to focus nearby objects clearly ,ie; the images of the nearby objects fall correctly on the retina after refraction, whereas the distant object doesn’t exactly fall on the retina. This is because the eye lens may be too convexed .
In this case, when the eyeball is too convexed, it will be unable to focus on distant objects. This means that the image of the object falls short of the retina and will be formed in front of the retina, the light sensitive spot. This causes blurred vision and there are several corrective methods that can be adopted , one of them being the usage of corrective lenses.

Hence, option (b) is the right answer for the given question.

Note:
To correct this defect, we deploy the usage of concave lenses. The concave lens will help in divergence of parallel light rays, before it is focused on the retina by the convex eye lens. Other corrective methods include eye correction surgery.