Question

What structure is used to focus light in a reflecting telescope?

Convex lens
Plane mirror
Concave mirror

Answer 1

CONCAVE

Explanation:did it on edge 2021

Answer 2

Concave mirror

Step-by-step explanation:

• Reflecting telescopes is a type of telescope that uses mirrors instead of lens. This is because mirrors are lighter and thus are easier to make perfectly smooth as compared to lenses.
• Reflecting telescopes use concave mirrors for the purposes of bringing light gathered to a certain focus.
• Concave mirror in reflecting telescopes collects parallel rays from the object and forms an image at the focal point.