Q. Which of the following planet has length of its day and the tilt of its axis are almost identical to those of the earth?
Answer: Mars
Notes: Mars is a planet with a very similar daily cycle as the Earth. Its sidereal day is 24 hours, 37 minutes and 22 seconds and its solar day 24 hours, 39 minutes and 35 seconds. A Martian day (referred to as “sol”) is therefore approximately 40 minutes longer than a day on Earth.
Its axial tilt is most similar to Earth. Mars' tilt is 25 degrees, just a fraction away from the Earth's 23.5 degrees. Mars also has a very elliptical orbit. Because of this, the difference between its closest and most distant point along its orbit vary by 19%.