Focal Length of Concave Lens given Radius Solution

STEP 0: Pre-Calculation Summary
Formula Used
Focal Length of Concave Lens = -Radius/2
Fconcave lens = -rcurve/2
This formula uses 2 Variables
Variables Used
Focal Length of Concave Lens - (Measured in Meter) - Focal Length of Concave Lens is a measure of how strongly the lens diverges light.
Radius - (Measured in Meter) - The Radius of Lens or Mirror is a radial line from the focus to any point of a curve.
STEP 1: Convert Input(s) to Base Unit
Radius: 9 Meter --> 9 Meter No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Fconcave lens = -rcurve/2 --> -9/2
Evaluating ... ...
Fconcave lens = -4.5
STEP 3: Convert Result to Output's Unit
-4.5 Meter --> No Conversion Required
FINAL ANSWER
-4.5 Meter <-- Focal Length of Concave Lens
(Calculation completed in 00.004 seconds)

Credits

Created by Anirudh Singh
National Institute of Technology (NIT), Jamshedpur
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6 Focal Length of Lens Calculators

Lens Makers Equation
Go Focal Length 1 = (Lens Refractive Index/Medium Refractive Index-1)*(1/Radius of Curvature at Section 1-1/Radius of Curvature at Section 2)
Focal Length using Distance Formula
Go Focal Length of Lens = (Focal Length 1+Focal Length 2-Width of Lens)/(Focal Length 1*Focal Length 2)
Focal Length of Concave Lens given Image and Object Distance
Go Focal Length of Concave Lens = (Object Distance*Image Distance)/(Image Distance-Object Distance)
Focal Length of Convex Lens given Object and Image Distance
Go Focal Length of Convex Lens = (Object Distance*Image Distance)/(Object Distance-Image Distance)
Focal Length of Concave Lens given Radius
Go Focal Length of Concave Lens = -Radius/2
Focal Length of Convex Lens given Radius
Go Focal Length of Convex Lens = Radius/2

Focal Length of Concave Lens given Radius Formula

Focal Length of Concave Lens = -Radius/2
Fconcave lens = -rcurve/2

What is Focus in Physics?

In geometrical optics, a focus, also called an image point, is the point where light rays originating from a point on the object converge. A principal focus or focal point is a special focus: For a lens, or a spherical or parabolic mirror, it is a point onto which collimated light parallel to the axis is focused.

How to Calculate Focal Length of Concave Lens given Radius?

Focal Length of Concave Lens given Radius calculator uses Focal Length of Concave Lens = -Radius/2 to calculate the Focal Length of Concave Lens, Focal length of Concave Lens given Radius is the distance of focus from the pole of the lens. Focal Length of Concave Lens is denoted by Fconcave lens symbol.

How to calculate Focal Length of Concave Lens given Radius using this online calculator? To use this online calculator for Focal Length of Concave Lens given Radius, enter Radius (rcurve) and hit the calculate button. Here is how the Focal Length of Concave Lens given Radius calculation can be explained with given input values -> -4.5 = -9/2.

FAQ

What is Focal Length of Concave Lens given Radius?
Focal length of Concave Lens given Radius is the distance of focus from the pole of the lens and is represented as Fconcave lens = -rcurve/2 or Focal Length of Concave Lens = -Radius/2. The Radius of Lens or Mirror is a radial line from the focus to any point of a curve.
How to calculate Focal Length of Concave Lens given Radius?
Focal length of Concave Lens given Radius is the distance of focus from the pole of the lens is calculated using Focal Length of Concave Lens = -Radius/2. To calculate Focal Length of Concave Lens given Radius, you need Radius (rcurve). With our tool, you need to enter the respective value for Radius and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
How many ways are there to calculate Focal Length of Concave Lens?
In this formula, Focal Length of Concave Lens uses Radius. We can use 1 other way(s) to calculate the same, which is/are as follows -
  • Focal Length of Concave Lens = (Object Distance*Image Distance)/(Image Distance-Object Distance)
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