Q. The cycle of sunspots is

  • (A) 9 years
  • (B) 10 years
  • (C) 11 years
  • (D) 12 years
✅ Correct Answer: (C) 11 years

Published by Deepika ⭐ 5.98K Points at 18-Mar-2021 05:27 am in Geography

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