Consider the following statements: 1. Mercury takes the shortest time...
- Mercury takes the shortest time to revolve around the Sun (88 days) but not for rotation.
- Jupiter takes the shortest time for rotation. Earth takes 23 h 56 m and 4s to complete one spin and Mars takes 24h and 40m to spin on its axis. So, one Martian day is almost the same as one Earth day.
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Consider the following statements: 1. Mercury takes the shortest time...
Explanation:
1. Mercury takes the shortest time to rotate and revolve around the Sun:
- Mercury takes about 59 Earth days to complete one rotation on its axis, making it the planet with the slowest rotation.
- However, it only takes about 88 Earth days to complete one orbit around the Sun, making it the planet with the shortest year.
- This unique combination of slow rotation and fast revolution results in days on Mercury being longer than its years.
2. One Martian day is roughly the same as a day on Earth:
- A day on Mars, also known as a "sol," is only slightly longer than a day on Earth.
- A Martian day lasts about 24 hours and 39 minutes, making it very similar to a day on Earth which lasts about 24 hours.
- This similarity in day length makes it easier for scientists and astronauts to adjust to the Martian day-night cycle.
Therefore, statement 2 is correct while statement 1 is incorrect. Hence, the correct answer is option 'B' - 2 only.