Suppose your Newtonian reflector has an objective mirror 20 cm (8 in.) in diameter with a focal length of 2 m. What magnification do you get with eyepieces whose focal lengths are

(a) 9 mm,

(b) 20mm,

(c) 55 mm?

(d) What is the telescope’s diffraction-limited angular resolution when used with orange light of wavelength 600 nm?

(e) Would it be possible to achieve this angular resolution if you took the telescope to the summit of Mauna Kea? Why or why not?