Answer:
Option C
Explanation:
Visible telescopes are the telescopes which are sensitive in the spectrum of the light in the visible range.
The visible light telescopes are of three types out of which the reflecting telescopes uses the mirror so as to collect light as much as it can.
Convex mirror is used in such telescopes to collect all the light that falls on it and then the mirror reflects the light back to the focus.
Thus the mirror acts a bucket of light for its collection and the helps to form the world's largest visible light telescope.
