Question: A small telescope has a concave mirror with a 5.50-m radius of curvature for its objective. Its eyepiece is a 3.80-cm focal length lens.

A small telescope has a concave mirror with a 5.50-m radius of

A small telescope has a concave mirror with a 5.50-m radius of curvature for its objective. Its eyepiece is a 3.80-cm focal length lens. (a) What is the telescope's angular magnification? (b) What is the angle subtended by a 25,000-km diameter sunspot? The average Earth-Sun distance is 1.496 101 m. rad (c) What is the angle of its telescopic image?

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