The type of image formed by a refracting telescope is an enlarged, upside-down virtual image
It is the phenomenon of bending of light when it travels from one medium to another medium. The bending towards or away from the normal depends upon the medium of travel as well as the refractive index of the material. There are several applications of the refraction of light in our day-to-day life such as the twinkling of stars in a clear sky and the formation of rainbows in the sky.
The refracting telescope used to observe astronomical bodies is an optical instrument that is used to see the enlarged image of distant astronomical bodies present in space. The final image formed by an astronomical telescope is always a virtual, upright, and enlarged one.
Thus, The type of image formed by a refracting telescope is an enlarged, upside-down virtual image, therefore the correct option is A.
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