Focal length of a concave mirror is 12 cm. What is its radii of curvature?

What is the focal length of a convex lens (mu=1*5) with radii of curvature R?

Show that the focal length of a spherical miror is half the radius of its curvature.

Find the focal length of convex mirror whose radius of curvature is 32 cm.

Show that the focal length of a conave spherical mirror is half of the radius of its ccurvature.

The radius of curvature of a concave mirror is 30 cm what is its focal length?

The radius of curvature of a convex mirror is 40 cm what is its focal length?

The focal length of a concavo - convex lens of radii of curvature 5 cm and 10 cm is 20 cm.What will be its focal length in water (mu=4//3) ?

Find the focal lengh of a convex miror and concave mirror each having radius of curvature of 20 cm.