A reflecting type telescope has a large mirror of its objective with radius of curvature equal to 100 cm. If the eyepiece has a focal length of 2 cm, what will be the magnifying power of the telescope?

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.

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.

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

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

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

A giant refracting telescope at an observatory has an objective lens of focal length 15m. If an eyepiece of focal length 1.0cm is used, what is the angular magnification of the telescope?

In a compound microscope,an object is placed at a distance of 1.5 cm from the objective of focal length 1.25 cm .If hthe eye-piece has a focal length of 5 cm and the final image is formed at the near point,estimate the magnifying power of the icroscope.