Question

Earth takes 365 days to revolve around the Sun, whereas, Mars takes 687 (Earth's) days to complete one revolution around the Sun. Why does Mars take more time than earth to complete its revolution around the Sun?

• A. Mars is bigger than Earth
• B. Earth is bigger than Mars
• C. Mars is at a greater distance from the Sun than Earth is
• D. Can't be said

Answer 1

The correct option is C

Mars is at a greater distance from the Sun than Earth is

Since Mars is at a greater distance from the Sun than earth, therefore, Mars takes more time to complete a revolution around the Sun. Period of revolution of a planet increases as its distance from the Sun increases.