Radius in Lenses and Refraction Formulas

Radius is a radial line from the focus to any point of a curve, used to measure the distance from the center of a circle or sphere to its edge or surface. And is denoted by r_curve. Radius is usually measured using the Meter for Length. Note that the value of Radius is always positive.

Lenses and Refraction formulas that make use of Radius

fxFocal Length of Concave Lens given RadiusGo

fxFocal Length of Convex Lens given RadiusGo

FAQ

What is the Radius?

Radius is a radial line from the focus to any point of a curve, used to measure the distance from the center of a circle or sphere to its edge or surface. Radius is usually measured using the Meter for Length. Note that the value of Radius is always positive.

Can the Radius be negative?

No, the Radius, measured in Length cannot be negative.

What unit is used to measure Radius?

Radius is usually measured using the Meter[m] for Length. Millimeter[m], Kilometer[m], Decimeter[m] are the few other units in which Radius can be measured.

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