Question

Short-sightedness is caused because
(a) the eye lens become too converging
(b) the eye-ball is too elongated
(c) the focal length of eye lens become too short
(d)all of these​

Answer 1

Answer:

d) all of these

Explanation:

Short-sightedness usually occurs when the eyes grow slightly too long. This means that light doesn't focus on the light-sensitive tissue (retina) at the back of the eye properly. Instead, the light rays focus just in front of the retina, resulting in distant objects appearing blurred.