Question

Radio telescope is made up of one or more dishes of
shape.
a) Spherical b) Hyperbolic c) Parabolic d) Hexagonal​

Answer 1

Radio interferometry

Astronomical radio interferometers usually consist either of arrays of parabolic dishes (e.g., the One-Mile Telescope), arrays of one-dimensional antennas (e.g., the Molonglo Observatory Synthesis Telescope) or two-dimensional arrays of omnidirectional dipoles (e.g., Tony Hewish's Pulsar Array).

Spherical