A small telescope has an objective lens of focal length 140cm and an eyepiece of focal length 5.0cm. What is the magnifying power of the telescope for viewing distant objects when
(i)For the telescope described in Exercise 34 (a), what is the separation between the objective lens and the eyepiece?
(ii) If this telescope is used to view a 100 m tall tower 3 km away, what is the height of the image of the tower formed by the objective lens?
(iii) What is the height of the final image of the tower if it is formed at 25cm?