Sample questions
You've seen the pattern — here are a few of the actual PYQs.
NDA2026
One year a planet is 8 times as large as compared to the one year at the Earth. Which one of the following is correct about the planet's orbit?
- A The semimajor axis of the planet's orbit is same as that of the Earth.
- B The semimajor axis of the planet's orbit is two as compared to that of the Earth.
- C The semimajor axis of the planet's orbit is thrice as compared to that of the Earth.
- D The semimajor axis of the planet's orbit is four times as compared to that of the Earth. ✓
✓ Correct answer: (D)
Science & Technology › Physics & Chemistry
NDA2020
Two planets orbit the Sun in circular orbits, with their radius of orbit as R1 = R and R2 = 4R. Ratio of their periods (T1/T2) around the Sun will be
- A 1/16
- B 1/8
- C 1/4
- D 1/2 ✓
✓ Correct answer: (D)
Science & Technology › Physics & Chemistry
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