The diameter of the Sun is 1.39x10^9m. Itsdistance to the Earth is 1.50x10^11 m. Astronomers are using a refractor telescope to observe it, of which the objective has a dimeter of 10.0 cm anf focal length of 1.00 m.
a). Try to find where the image of the Sun is located after the objective.
b). Calculate the lateral magnification of the Sun by the objective, according to the object distance and image distance.
c). What's the size of the Sun's image formed by the objective, according to the lateral magnification.