Question

Lens Power Explanation. ​

Answer 1

$\colorbox{magenta}{Power of a Lens :}$

➪ Power of a lens is defined as the inverse of focal length (in meters) of the lens.

➪ It is a measure of the amount of deviation of light ray produced by a lens, more the power, more is the deviation.

➪ Unit of power is Dioptre (D).

$➪P=f1.$

Answer 2

Explanation:

Power of a Lens is one of the most interesting concepts in ray optics. The detailed concept of this topic is given in the below article so that learners can understand this chapter more effectively.

Simply put, the power of a lens in Ray Optics is its ability to bend light. The greater the power of a lens, the greater is its ability to refract light that passes through it. For a convex lens, the converging ability is defined by power and in a concave lens, the diverging ability.

The power of lens is specified as

$p = \frac{1}{f}$

The S.I. Unit of power of lens is

${m}^{ - 1}$

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