In an astronomical telescope of refracting type :

• Eyepiece has greater focal length.
• Objective has greater focal length.
• Objective and eyepiece have equal focal length.
• Eyepiece has greater aperature than the objective

Draw a labelled diagram of an image formed by a compound microscope, with the image at least distance of distinct vision. Write any one expression for its magnifying power.

(i) Define Resolving Power of a simple astronomical telescope.

(ii) State one advantage of a reflecting telescope over refracting telescope.

Draw a labelled diagram of an image formed by a compound microscope with image formed at least distance of distinct vision.