MCQ practice · SSC Physics Board questions · Chapter 1: Physical Quantities and Their Measurements
Which scientist gave the idea of a sun-centred solar system?
Think it through first, then pick an option.
- a Galileo
- b Copernicus
- c Aristarchus
- d Seleucus
Answer and explanation
Correct answer: c Aristarchus
Aristarchus (310 BC) first gave the idea of a sun-centred solar system.
Why the other options are wrong
- a Galileo: Galileo brought this view before everyone and began proving ideas by experiment; the idea was first given by Aristarchus.
- b Copernicus: Copernicus explained the sun-centred system in a book in 1543, but the idea was first given by Aristarchus (310 BC).
- d Seleucus: Seleucus was the follower of Aristarchus who proved it by argument; the idea itself came from Aristarchus.
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