A person with a myopic eye cannot see objects beyond 1.2 m distinctly. What should be the type of the corrective lens used to restore proper vision?

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Chapter 10 NCERT Class 10 Science SOLUTIONS

2. A person with a myopic eye cannot see objects beyond 1.2 m distinctly. What should be the type of the corrective lens used to restore proper vision?

Question:

A person with a myopic eye cannot see objects beyond 1.2 m distinctly. What should be the type of the corrective lens used to restore proper vision?

Answer:

Concave lens.

Power of lens P = 1/f

P = 1/(-1.2)

P = - 10/12 (for concave lens)

Therefore, P = –0.83 D

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