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Subjects>Math>Math & Arithmetic

What is the Focal length of a concave mirror?

Anonymous

∙ 15y ago

Updated: 11/4/2022

It is the point , on the central axis, where light, that is parallel to the central axis, passes thru after it is reflected from the mirror. It is also at a distance from the mirror equal to twice the radius of curvature of the mirror.

Wiki User

∙ 15y ago

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Q: What is the Focal length of a concave mirror?

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The distance between a mirror and its focal point is called the?

Focal length, positive number with a concave mirror, negative for a convex mirror.

Focal length of a concave mirror?

1/object distance + 1/ image distance = 1/focal length

Will focal length of concave mirror change when kept in water?

yes

What is the relation between focal length and center of curvature?

The focal length of a concave mirror is about equal to half of its radius of curvature.

Why the focal length of concave mirror changes in water?

I don't think so. The focal length would remain the same. It mainly depends on the radius of curvature of the mirror.

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