How do you find the focal length from the radius of curvature?

The relation between focal length (f) and radius of curvature (R) of a spherical mirror is that the focal length is equal to half of the radius of curvature i.e. f=R2.

What is the radius of curvature of concave mirror?

Hint:The radius of curvature of convex or concave mirror is equal to two times of the focal length of convex or concave mirror. The radius of curvature is the radius of sphere formed by the convex or concave mirror. It is also equal to the distance between the pole and centre of curvature.

What is the focal length of a concave mirror if the radius of curvature is 40cm?

Answer: The focal length of the given spherical mirror is 20cm.

What is the focal length of a concave mirror of radius of curvature 24cm?

Answer: The focal length is 12 cm .

What is the focal length of concave mirror?

Focal Length – The distance between the pole P of the concave mirror and the focus F is the focal length of the concave mirror. Thus, the focal length of a concave mirror can be estimated by obtaining a ‘Real image’ of a distant object at its focus, as shown in the figure.

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

The radius of curvature of a spherical mirror is 20 cm. What is its focal length? Therefore, the focal length of the spherical mirror is 10 cm.

What is the formula for radius of curvature?

Radius of Curvature Formula R= 1/K, where R is the radius of curvature and K is the curvature.

What will be the focal length of a concave mirror having radius of curvature 20cm?

How do you calculate focal length?

The focal length of a double convex lens is given by the formula (1/v) + (1/u) = (1/f), where u is the distance between the object and the lens, v is the distance between the image and the lens.

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.

What is the focal length of a concave mirror of radius of curvature 16 cm *?

Answer: 32cm is the answer.

Is focal length the same as radius of curvature?

The distance from the pole to the center of curvature is called (no surprise, I hope) the radius of curvature (r). The distance from the pole to the focal point is called the focal length (f). The focal length of a spherical mirror is then approximately half its radius of curvature.