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The focal length of a lens is related to its radius of curvature and the index of refraction by the lensmaker's equation: [\frac{1}{f} = (n-1) \left( \frac{1}{R_1} - \frac{1}{R_2} \right)] Given the radius of curvature (R = 0.70 , m) and the index of refraction (n = 1.8), you can calculate the focal length.

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Q: What was the focal length when the radius of curvature was 0.70 m and index of refraction was 1.8?
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Related questions

How do you find radius of curvature if focal length is given?

radius of curvature = 2Focal length


When curvature radius is larger what happens to the focal point?

When the curvature radius is larger, the focal point moves closer to the lens or mirror. This is because the curvature radius affects the focal length – a larger radius results in a shorter focal length and thus a closer focal point.


What does curvature of radius of a lens effect?

The curvature of the radius of a lens affects its focal length and optical power. A lens with a shorter radius of curvature will have a shorter focal length and higher optical power, while a lens with a larger radius of curvature will have a longer focal length and lower optical power.


The relation between focal length and radius of curvature of spherical mirror is?

The relation between focal length (f), radius of curvature (R), and the focal point of a spherical mirror can be described by the mirror equation: 1/f = 1/R + 1/R'. The focal length is half the radius of curvature, so f = R/2.


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.


If the focal lenght of a concave mirror is 15 cm find the radius of curvature?

The radius of curvature and the focal length mean the same so the radius of curvature is also 15 cm.


Can focal length and radius of curvature of a lens be same?

No, the focal length and radius of curvature of a lens cannot be the same. The radius of curvature is twice the focal length for a lens. This relationship is based on the geometry of the lens and the way light rays converge or diverge when passing through it.


What is relation between focal length and radius of curvature in lenses?

The Center of curvature is 2 times the focal length. By the way this is a physics question.


Is the focal length equal to the radius of curvature of the mirror?

yes


What is the focal length of concave mirror of radius 20cm?

The focal length of a concave mirror is half of its radius of curvature. Therefore, for a concave mirror with a radius of 20 cm, the focal length would be 10 cm.


What is the relationship between focal length and radius of curvature?

R = 2f


How can find the radius of curvature?

There is a specific formula for finding the radius of a curvature, used often when one is measuring a mirror. The formula is: Radius of curvature = R =2*focal length.