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Friday, 9 October

NEET UG 2025 · Physics · Question 31

NEET 2025 Physics, question 31

Question 31 of the NEET 2025 paper (code 45) is a Physics question from Gravitation. Its idea, Kepler's Laws, was asked 3 times, in 2018, 2025 and 2026, across NEET 2017–2026. The NTA final answer key gives option 1.

Updated 2026-10-08

Q31 · Physics

The radius of Martian orbit around the Sun is about 4 times the radius of the orbit of Mercury. The Martian year is 687 Earth days. Then which of the following is the length of 1 year on Mercury ?

  1. 188 earth daysOfficial answer
  2. 2225 earth days
  3. 3172 earth days
  4. 4124 earth days

Official answer: option 1 · NTA final answer key

Same idea

Kepler's Laws, in other papers

NEET asked this idea 3 times, in 2018, 2025 and 2026. The other 2 questions below.

  • 2026 Q14In a solar system, the time-period of revolution of a planet tracing a circular orbit of radius R is proportional to :One-line MCQ · Easy
  • 2018 Q39The kinetic energies of a planet in an elliptical orbit about the Sun, at positions A, B and C are KAK_A, KBK_B and KCK_C, respectively.…Figure-based · Medium

Kepler's Laws: every question and how it was framed

The chapter

Gravitation in ten years of NEET

19 questions from 2017–2026, asked in 10 of 10 papers, about 1.8 a paper. Gravitation alone had 19.

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Gravitation: questions per paper

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