Convex Mirror Equation Calculator

A convex mirror is a spherical reflecting surface, where the bulging side of the mirror faces the source of light. It is referred to as a diverging or a curved mirror. The image on a convex mirror is always virtual, diminished and upright. The distance between the object and the convex mirror is measured at the point where the image reflection reaches an approximate size of the object. Use this online convex mirror equation calculator to find the focal length, image and object distance.

Calculate Focal Length, Image and Object Distance

cm
cm
cm

A convex mirror is a spherical reflecting surface, where the bulging side of the mirror faces the source of light. It is referred to as a diverging or a curved mirror. The image on a convex mirror is always virtual, diminished and upright. The distance between the object and the convex mirror is measured at the point where the image reflection reaches an approximate size of the object. Use this online convex mirror equation calculator to find the focal length, image and object distance.

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Formula:

Convex Mirror Equation Convex Mirror Equation 1 / f = 1 / d0 + 1 / di
f = 1/ ((1/do) + (1/di)) do = 1/ ((1/f) - (1/di)) di = 1/ ((1/f) - (1/do))
Where, f = Focal Length do = Object Distance di = Image Distance

Example:

An object is at a distance of 50 cm from the convex mirror, and its focal length is 23 cm

Solution,

Image Distance (di) = 1/ ((1/f) - (1/do))
= 1/ ((1/23) - (1/50))
= 42.5926 cm

You can also calculate focal length, image and object distance alternatively with the other known values.


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