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NDA 2024
Exam
NDA
Year
2024
Subject
General Ability
Chapter
General Science

NDA 2024 · General Ability · General Science

For a human eye, where u is the distance of an object from the eye,...

For a human eye, where uu is the distance of an object from the eye, ff is the focal length of the lens and vv is the distance of image from the eye, which is the correct schematic graph?For a human eye, where u is the distance of an object from the eye, f is the focal length of the lens and v is theFor a human eye, where u is the distance of an object from the eye, f is the focal length of the lens and v is theFor a human eye, where u is the distance of an object from the eye, f is the focal length of the lens and v is theFor a human eye, where u is the distance of an object from the eye, f is the focal length of the lens and v is the

Options

  1. AA ball of mass 0.2 ~kg rests on a vertical post of height 5 ~m . A bullet of mass 0.01 ~kg , travelling with a velocity
  2. BA ball of mass 0.2 ~kg rests on a vertical post of height 5 ~m . A bullet of mass 0.01 ~kg , travelling with a velocity
  3. CA ball of mass 0.2 ~kg rests on a vertical post of height 5 ~m . A bullet of mass 0.01 ~kg , travelling with a velocity
  4. DA ball of mass 0.2 ~kg rests on a vertical post of height 5 ~m . A bullet of mass 0.01 ~kg , travelling with a velocity

Correct answer

C. A ball of mass 0.2 ~kg rests on a vertical post of height 5 ~m . A bullet of mass 0.01 ~kg , travelling with a velocity

Step-by-step solution

When object distance increase, in order to maintain image at retina, focal length increases initially, later for extreme distance it becomes constant. Hence, option (C) is correct.
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