A reflecting type telescope has a concave in of radius of curvature 100 cm. Calculate length of the eyepiece to obtain a magnifying power of 10.

A reflecting type telescope has a concave reflector of radius of curvature 120 cm.Calculate the focal length of eye-piece to secure a magnification of 20.

An object is placed 15 cm from a convex mirror of radius of curvature 90 cm.Calculate the image position and magnification.

A reflecting type telescope has a large spherical mirror for its objective with radus of curvature equal to 80 cm.What is the magnifying power of telescope,if eyepiece used has a focal length of 1.6 cm.

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

An object is placed in front of a concave mirror of radius of curvature 40 cm at a distance of 10 cm.Find the position and magnification of the image.

A candle is held 3 cm away from a concave mirro of radius of curvature 24 cm.Where is the image formed?

An object is placed in front of a concave mirror of radius of curvature 30 cm at a distance of10 cm.Find the position,nature and magnification fo the image.