A person cannot see distinctly objects kept beyond 2 m. This defectcan be corrected by using a lens of power(a) + 0.5 D(b) – 0.5 D(c) + 0.2 D(d) – 0.2 D

Question

A person cannot see distinctly objects kept beyond 2 m. This defectcan be corrected by using a lens of power(a) + 0.5 D(b) – 0.5 D(c) + 0.2 D(d) – 0.2 D
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Solution 1

The person is suffering from myopia or nearsightedness, a condition where the person can see nearby objects clearly but distant objects appear blurry.

To correct this defect, we need a diverging or concave lens. The power of the lens is given by the formula:

P = 1/f

Where: P = power of the lens

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