Assume that the far point of a myopic (nearsighted) eye is 5.04 m in front of the eye. A lens is used to correct the vision, such that it can focus sharply an object at infinity. What is the power of the lens (in diopters; answer sign and magnitude)?

Explanation:

From the question we are told that:

Far-point

Where

u=-\alpha

Generally the equation for Lens is mathematically given by

explanation:

newton's third law, for every action there is an equal and opposite reaction.

because if the tool that you are using is not balanced it there would be false mass.