A nearsighted man can clearly see objects up to a distance of 1.5m. Calculate the power of the lens of the spectacles necessary for the remedy of this defect.

Explanation

To solve the problem of calculating the power of the lens necessary for a nearsighted man who can clearly see objects only up to a distance of 1.5 m, we will follow these steps:

### Step 1: Understand the condition of the nearsighted man
A nearsighted person (myopic) can see objects clearly only up to a certain distance, which is given as 1.5 m in this case. Beyond this distance, objects appear blurry.

### Step 2: Determine the required focal length of the lens
For a nearsighted person, we need to use a concave lens to correct their vision. The lens should create an image of distant objects (at infinity) at the near point of the person, which is 1.5 m.

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