Question

which types of telescope can be made using concave mirror, convex mirror, plane mirror , and lens.

Answer 1

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In a reflecting telescope, instead of a convex objective lens, a concave mirror is used to collect parallel rays from the object and form an image at the focal point. ... Concave mirrors focus light at a focal point using reflection, not refraction. Mirrors are used instead of lenses in large, professional telescopes

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Answer 2

1.reflecting telescope can made by using concave mirror

explanation ---Galileo used concave lens as eye piece. .As it was having problems Kepler made telescope with double convex lenses.The basic tool that Galileo used was a crude refractingtelescope. His initial version only magnified 8x but was soon refined to the 20x magnification he used for his observations for Sidereus nuncius. It had a convex objective lens and a concave eyepiece in a long tube.

2. refracting telescope can made ising convex lens

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