The far point of a myopic person is 80 cm in front of the eye. What is the nature and power of the lens required to correct the problem?

Explanation

To solve the problem of determining the nature and power of the lens required to correct the myopia of a person whose far point is 80 cm in front of the eye, we can follow these steps:

### Step 1: Understand the Condition
A myopic person has a far point that is closer than infinity. In this case, the far point is given as 80 cm. This means that the person can only see objects clearly up to 80 cm away, and anything beyond that appears blurry.

### Step 2: Identify the Type of Lens Required
To correct myopia, we need a lens that diverges light rays so that they appear to come from a point further away than the actual far point of the myopic eye. The type of lens used for this correction is a **concave lens**.

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