The far point of a person having myopia is 200 cm in front of the eye. Find the focal length and power of lens required to enable him see the distant objects clearly.

Explanation

To solve the problem, we need to determine the focal length and power of the lens required for a person with myopia (short-sightedness) whose far point is 200 cm in front of their eye.

### Step-by-Step Solution:

1. **Understanding the Problem**:
- The far point of the person is at 200 cm, which means they can only see objects clearly up to this distance.
- To enable the person to see distant objects clearly, we need to use a lens that will help bring the image of distant objects (which are at infinity) to their far point (200 cm).

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