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Define focal length and radius of curvature of a concave lens?

Define focal length and radius of curvature of a concave lens?

Grade:12

5 Answers

OUTPASS
219 Points
8 years ago
Focal Length: The distance of principle focus from optic center is called focal length of a
concave lens.
Radius of Curvature: The radius of the sphere of which the curved surface of the lens forms
a part is called the radius of curvature of a concave lens. A concave lens has two radii of
curvatures.
 
Surendra
54 Points
8 years ago
Focal Length: The distance of principle focus from optic center is called focal length of aconcave lens.Radius of Curvature: The radius of the sphere of which the curved surface of the lens formsa part is called the radius of curvature of a concave lens. A concave lens has two radii ofcurvatures.
GEETHAROYAL INDIA
32 Points
8 years ago
The focal length of the lens is the distance between the lens and the image sensor when the subject is in focus, usually stated in millimeters (e.g., 28 mm, 50 mm, or 100 mm). In the case of zoom lenses, both the minimum and maximum focal lengths are stated, for example 18–55 mm.As a demonstration of the effectiveness of the lens equation and magnification equation, consider the following sample problem and its solution. A 4.00-cm tall light bulb is placed a distance of 45.7 cm from a double convex lens having a focal length of 15.2 cm. Determine the image distance and the image size.the radius of a circle which touches a curve at a given point and has the same tangent and curvature at that point.the radius of a circle which touches a curve at a given point and has the same tangent and curvature at that point.
Rayapati Dillipkumar
44 Points
8 years ago
The distance between the center of the concave point and the focal point of a mirror or the point where the parallel rays of light meet and the radius of curvature is the distance between the centre of the concave point and the object.
Ranjeeth
15 Points
4 years ago
Focal length (f) : the distance between the optic centre of concave lens and it's principal focus is called focal length
 
Radius of curvature: the distance between centre of curvature and optic centre is called radius of curvature

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