Geometrical Optics - SS2 Physics Past Questions and Answers - page 4

A reflecting telescope uses a concave mirror as the primary objective to gather and focus light. The light is then reflected onto a secondary mirror, which directs it to the eyepiece for observation. The working principle is based on the reflection of light in the mirrors.

Reflecting telescopes are commonly used in astronomy for observing celestial objects. They offer several advantages over refracting telescopes, such as larger apertures, reduced chromatic aberration, and simpler construction. Reflecting telescopes are used by professional astronomers for astronomical research and by amateur astronomers for stargazing and celestial observations.