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Half of the radius

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Q: For very small angles the focal length of a concave mirror is?
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How can a rough value of the focal length of a concave mirror be obtained?

rough focal length of concave mirror


Why do images in a concave mirror appear inverted?

If an object's distance from the concave mirror is greater than the mirror's focal length, then the mirror image of it will be inverted. If the distance from the concave mirror is less than the focal length of the mirror, the image will not be inverted. No image will be produced if the distance from the mirror to the object is equal to the mirror's focal length.


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


What is the focal length of concave mirror to form real image?

15cm


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.


What is the positive lens is the same as?

The focal point F and focal length f of a positive (convex) lens, a negative (concave) lens, a concave mirror, and a convex mirror. The focal length of an optical system is a measure of how strongly the system converges or diverges light.


Image form by concave mirror?

A2. A concave mirror is commonly used as a make-up mirror or a shaving mirror. For at close distances, (well inside it focal length) it gives a modest magnification. At distances greater than its focal length, it gives diminished images.


If the surface of a concave mirror is made more curved what happens to its focal length?

A concave mirror is a spherical mirror with a reflective inside surface. When the reflective surface is made more curved, the distance between the focal point and the surface increases. A concave mirror can form both virtual or real images.


Will focal length of a concave mirror would increase decrease stay the same if the mirror were made flatter?

it would increase