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Which noted mathematician-astronomer, of the Gupta period, proposed that the earth was round and it moves round the while rotating on its own axis?
1. Aryabhatta
2. Varahamihira
3. Kalidasa
4. Vatsyayana

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Correct Answer - Option 1 : Aryabhatta

The correct answer is Aryabhatta.

  • Aryabhatta wrote Aryabhatiya and Surya Siddhanta.
  • In Aryabhatiya, he wrote about Arithmetic, Geometry, Algebra and Trigonometry. 
  • In the first chapter of the Aryabhatiya, he insisted that the earth rotates about its axis and that the apparent movement of the stars is a relative motion caused by the rotation of the earth.
  • He gives the number of rotations of the earth in a yuga.
  • In Surya Siddhanta, he explained scientifically the causes of the solar and lunar eclipses.
  • Aryabhatta also founded the place value system and zero.

  • Varahamihira 
    • He was an Indian astrologer and polymath. 
    • He discovered a version of Pascal's triangle and worked on magic squares.
    • He also improved the accuracy of the sine tables of Aryabhata.
  • Kalidasa 
    • He is often considered ancient India's greatest playwright and dramatist. 
    • He wrote Abhijñānaśākuntalam (Shakuntala) is regarded as a masterpiece. It was among the first Sanskrit works to be translated into English.
  • Vatsyayana 
    • He is known for writing the Kama Sutra
    • His interest in human sexual behaviour as a medium of attaining spirituality was recorded in the book.

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