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A Cassegrainian telescope uses two mirro...

A Cassegrainian telescope uses two mirrors as shown in Fig. Such a telescope is built with the mirrors `20 mm` apart. If the radius of curvature of large mirror is `220 mm` and the small mirror is `40 mm`, where will the final image of an object at infinity be ?

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A Cassegrain telescope uses two mirrors. Such a telescope is bult with the mirrors 20mm apart. If the radius of carvature of the large mirror is 220mm and the small mirror is 140 mm, where will the final image of an object at infinity be ?