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Human Eye and Colourful World — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceHuman Eye and Colourful World2 Marks
Question
Name the type of lens used to correct.
  1. Myopia.
  2. Presbyopia.
✓

Answer

  1. Myopia: The type of lens used to correct Myopia is concave lens.

  2. Presbyopia: An eye that suffers from myopia as well as from hypermetropia is said to suffer from presbyopia. A person with this defect cannot see objects distinctly placed at any distance from him. To correct this defect, a person is prescribed bifocal lens that has both types of lenses convex and concave.

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