1) Earth is the centre of the universe and planets revolve in circular orbit. a) Ptolemy model b) Copernicus model c) Kepler model 2) The Sun is the centre of the universe and planets revolve in circular orbit a) Copernicus model b) Ptolemy model c) Kepler model 3) The Sun is the centre of the universe and planets revolve in elliptical orbit a) Ptolemy model b) Kepler model c) Copernicus model 4) The Earth is the centre of the universe a) Heliocentric theory b) Geocentric theory 5) The Sun is the centre of the universe a) Heliocentric theory b) Geocentric theory

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