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The eye ball of a person is small in size. The power of the eye lens is normal he is having the problem of:

Amyopia

Bpresbyopia

Chypermetropia

Dastigmatism

Answer:

C. hypermetropia

Read Explanation:

  • The person is likely having the problem of (C) hypermetropia.

Explanation

  • Hypermetropia, also known as farsightedness, is a condition where a person can see distant objects clearly but has difficulty focusing on nearby objects.

  • It can be caused by the eyeball being too short or the eye lens being too flat.

  • When the eyeball is small, the distance between the lens and the retina is shorter than normal. This causes light rays from a nearby object to focus at a point behind the retina, rather than directly on it, resulting in a blurred image.

  • The problem can be corrected by using a convex lens (a converging lens), which helps focus the light rays onto the retina.

The other options are incorrect for the following reasons:

  • (A) Myopia (Nearsightedness): Occurs when the eyeball is too long, causing light rays to focus in front of the retina.

  • (B) Presbyopia: A natural aging process where the eye's lens loses its ability to focus, making it difficult to see close objects. This is not caused by the size of the eyeball.

  • (D) Astigmatism: Caused by an irregularly shaped cornea or lens, which results in blurred vision at any distance.


Related Questions:

Which of the following statements is/are true about the principal axis of a spherical mirror?

  1. (i) It is normal to the mirror.
  2. (ii) Point of incidence always lies on the principal axis.
  3. (iii) Principal focus always lies on the principal axis

    The laws of reflection hold true for which of the following mirror(s)?

    1. (A) Concave mirror
    2. (B) Convex mirror
    3. (C) Plane mirror

      A spherical mirror converges a beam of light, at a given point on the principal axis. Which of the following statement(s) about the mirror is are true?

      1. (a) The mirror used in concave
      2. (b) The mirror has positive focal length
      3. (c) The point of convergence is the principal focus of the mirror

        Which of the following line(s) act as a normal to a spherical mirror?

        1. (i) Line joining the pole and centre of curvature
        2. (ii) Line joining the centre of curvature and point of incidence
        3. (iii) Line joining focus and point of incidence
          The distance between the focus and the center of curvature of a spherical mirror, in terms of the radius of curvature R, is equal to?