Which telescope uses a concave mirror to gather light from distant objects?

Which telescope uses a concave mirror to gather light from distant objects?

• A. Objective
• B. Reflecting telescope
• C. Eyepiece
• D. Microscope

Answer: (B)

A telescope that uses a concave mirror to gather light from distant objects is a reflecting telescope. The concave primary mirror collects faint light and reflects it to a focal point where the image can be viewed or recorded. This design is especially good for gathering a lot of light and avoiding color distortion that comes with lenses. The other terms describe different parts or instruments: the objective is the primary lens in a refracting telescope, the eyepiece is the magnifying lens you look through, and a microscope is a separate instrument designed for viewing very small, close-up objects, not distant ones.

A telescope that uses a concave mirror to gather light from distant objects is a reflecting telescope. The concave primary mirror collects faint light and reflects it to a focal point where the image can be viewed or recorded. This design is especially good for gathering a lot of light and avoiding color distortion that comes with lenses. The other terms describe different parts or instruments: the objective is the primary lens in a refracting telescope, the eyepiece is the magnifying lens you look through, and a microscope is a separate instrument designed for viewing very small, close-up objects, not distant ones.