a. The Ramsden eyepiece of a telescope is made of two positive lenses of focal length 2 cm each and also separated by 2 cm. Calculate its magnifying power when viewing an image at infinity.
b. The objective of the telescope is a 30-cm positive lens, with a diameter of 4.50 cm. Calculate the overall magnification of the telescope.
c. What is the position and diameter of the exit pupil?
d. The diameter of the eyepiece field lens is 2 cm. Determine the angle defining the field of view of the telescope.
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