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UPSC 2006: What is the approximate mean velocity with which the Earth moves round the Sun in its orbit?
(a)20 km/s
(b)30 km/s
(c)40 km/s
(d)50 km/s
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Not attemptedCorrect Answer: (b) 30 km/s
Earth’s average orbital (mean) speed around the Sun is about 29.8 km s⁻¹, which rounds to 30 km s⁻¹; the nearest listed option is 30 km s⁻¹, so option (b) is correct. ([en.wikipedia.org](https://en.wikipedia.org/wiki/Earth%27s_orbit?utm_source=openai))
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Frequently Asked Questions
What is the correct answer to this UPSC 2006 Science & Technology question?▼
The correct answer is option (b): 30 km/s. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Space Technology & Astronomy question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2006, GS Paper 1, as Question 37. It falls under Science & Technology > Space Technology & Astronomy.
What is the difficulty level of this UPSC question?▼
This question is rated "easy". It tests basic recall and most well-prepared aspirants should answer it correctly.
How many UPSC Prelims questions have been asked from Space Technology & Astronomy?▼
UPSC has asked 69 questions from Space Technology & Astronomy (under Science & Technology) across multiple years. Visit the topic page to see the full list and year-wise trends.