How would you determine the focal length and radius of curvature of a concave mirror?

Give the relation between focal length and radius of curvature of a spherical mirror.

Establish the relation between the focal length (f) and radius of curvature (R) for a spherical mirror.

How would you name the following compounds?

How would you name the following compounds?

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

What sign (+ve or-ve) is given to the focal length of a concave mirror?

A convex lens of focal length 15 cm is placed in front of a convex mirror co-axially 5 cm from the mirror. The image of an object placed at a distance 20 cm from the lens found to have been formed over the object. Estimate the radius of curvature of the mirror.