How do you calculate the radius of curvature of a convex lens?

What is the formula of radius of curvature of convex lens?

Analytically, the focal length is described by the lens maker’s equation: 1/f = (n – 1)(1/R1 + 1/R2), where R1 and R2 are the radii of curvature, f is the focal length, and n is the index of refraction.

How do you find the radius of curvature of a convex mirror?

If you find the focal length of the convex mirror formed by the cornea, then you know its radius of curvature (it’s twice the focal length).

How do you find the focal length of a convex lens if the radius of curvature is given?

Analytically, the focal length is described by the lens maker’s equation: 1/f = (n – 1)(1/R1 + 1/R2), where R1 and R2 are the radii of curvature, f is the focal length, and n is the index of refraction.

What is the radius of convex lens?

It has been given that the radius of curvature for a convex lens is 40 cm, for each surface.

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Is radius of curvature and centre of curvature same?

No, a centre of curvature and the radius of curvature is not the same.

Is the radius of curvature of a convex mirror negative?

The radius of curvature r is positive for a convex refracting surface and negative for a concave refracting surface.

What is the radius of curvature of the mirror its focal length is 20cm?

The radius of curvature is double the numerical value of the focal length of a spherical mirror. (The focal length is a point on the principal axis where rays coming parallel to the axis from infinity meet.) Therefore, the answer is option (D); 40 cm.

How do you solve a convex mirror equation?

Suppose an object is placed u cm in front of a spherical mirror of focal length f such that the image is formed v cm from the mirror, then u, v and f are related by the equation; 1/f= 1/u + 1/v. This equation is referred to as the mirror formula. The formula holds for both concave and convex mirrors.

What is the radius of curvature of a convex mirror which forms an image one fourth?

R = 2f = 240 cm.