Focal Length of Concave Mirror Calculator

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Focal Length of Mirror

Basics of Optics

Coefficient of Refraction

Focal Length of Lens

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Object and Image Distance

✖The Radius of Lens or Mirror is a radial line from the focus to any point of a curve.ⓘ Radius [r_curve]

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✖Focal Length of Concave Mirror is a measure of how strongly the mirror diverges or converges light.ⓘ Focal Length of Concave Mirror [F_concave]

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Formula

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Focal Length of Concave Mirror

Formula

`"F"_{"concave"} = -"r"_{"curve"}/2`

Example

`"-4.5m"=-"9m"/2`

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Focal Length of Concave Mirror Solution

STEP 0: Pre-Calculation Summary

Formula Used

Focal Length of Concave Mirror = -Radius/2
F_concave = -r_curve/2
This formula uses 2 Variables

Variables Used

Focal Length of Concave Mirror - (Measured in Meter) - Focal Length of Concave Mirror is a measure of how strongly the mirror diverges or converges 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

F_concave = -r_curve/2 --> -9/2

Evaluating ... ...

F_concave = -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 Mirror

(Calculation completed in 00.004 seconds)

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Created by Anirudh Singh

National Institute of Technology (NIT), Jamshedpur

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< 5 Focal Length of Mirror Calculators

Focal Length of Concave Mirror with Virtual Image

Go Focal Length of Concave Mirror = (Image Distance*Object Distance)/(Object Distance-Image Distance)

Focal Length of Concave Mirror with Real Image

Go Focal Length of Concave Mirror = (Image Distance*Object Distance)/(Image Distance+Object Distance)

Focal Length of Convex Mirror

Go Focal Length of Convex Mirror = (Object Distance*Image Distance)/(Image Distance-Object Distance)

Focal Length of Concave Mirror

Go Focal Length of Concave Mirror = -Radius/2

Focal Length of Convex Mirror given Radius

Go Focal Length of Convex Mirror = Radius/2

Focal Length of Concave Mirror Formula

Focal Length of Concave Mirror = -Radius/2
F_concave = -r_curve/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 Mirror?

Focal Length of Concave Mirror calculator uses Focal Length of Concave Mirror = -Radius/2 to calculate the Focal Length of Concave Mirror, Focal length of Concave mirror is the distance of the focus from the pole of the mirror. Focal Length of Concave Mirror is denoted by F_concave symbol.

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

FAQ

What is Focal Length of Concave Mirror?

Focal length of Concave mirror is the distance of the focus from the pole of the mirror and is represented as F_concave = -r_curve/2 or Focal Length of Concave Mirror = -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 Mirror?

Focal length of Concave mirror is the distance of the focus from the pole of the mirror is calculated using Focal Length of Concave Mirror = -Radius/2. To calculate Focal Length of Concave Mirror, you need Radius (r_curve). 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 Mirror?

In this formula, Focal Length of Concave Mirror uses Radius. We can use 2 other way(s) to calculate the same, which is/are as follows -

Focal Length of Concave Mirror = (Image Distance*Object Distance)/(Image Distance+Object Distance)
Focal Length of Concave Mirror = (Image Distance*Object Distance)/(Object Distance-Image Distance)

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