A refracting telescope is used to view the Moon (diameter 3480 km, distance from Earth 385,000 km). The focal lengths of the objective and eyepiece are +2.63 m and +18.9 cm, respectively.
(a) What should be the distance between the lenses?
m
(b) What is the diameter of the image produced by the objective?
cm
(c) What is the angular magnification?