Author Question: Which telescope has the largest light-gathering power among the following telescopes? A) A ... (Read 70 times)

Garrulous · **on:** Jul 27, 2018

Which telescope has the largest light-gathering power among the following telescopes?

A) A telescope of diameter 5 cm and focal length 50 cm
B) A telescope of diameter 6 cm and focal length 100 cm
C) A telescope of diameter 2 cm and focal length 100 cm
D) A telescope of diameter 3 cm and focal length 75 cm

Question 2

A telescope that suffers from chromatic aberration and has a low light-gathering power is most likely a:

A) small diameter reflecting telescope.
B) small diameter refracting telescope.
C) large diameter refracting telescope.
D) large diameter reflecting telescope.