Question

The power of a lens is -3D. Which type of lens is it?

Answer 1

Answer:

"Power of a lens is its ability to bend light . For a convex lens, the converging ability is defined by power and in a concave lens, the diverging ability . The diopter ( D ) is the unit of measuring power of a lens . The power is defined as the reciprocal of the focal length in meters ."

Answer 2

Answer:

$its \: - 3d \\ so \: negative \\ see \: the \: full \: explanation$

Write a program to determine the power of a lens .

Power of a lens is its ability to bend light . For a convex lens, the converging ability is defined by power and in a concave lens, the diverging ability . The diopter ( D ) is the unit of measuring power of a lens .

The power is defined as the reciprocal of the focal length in meters .

D = ( 1 / F )

Here, D is the power in diopter,

F is the focal length in meters.

Examples:

Input : F = 2 Output : D = 0.5 Input : F = 0.2 Output : D = 5