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For a myopic eye with a far point 1.2 m in front of the eye, the approximate power of the required concave lens is

Question
For a myopic eye with a far point 1.2 m in front of the eye, the approximate power of the required concave lens is
+0.83 D
-0.83 D
-1.2 D
+1.2 D
Answer
-0.83 D
Detailed Explanation
P = 1/f = 1/(-1.2 m) » -0.83 D (negative, confirming a concave/diverging lens).
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