The Law of Periods: The square of the period of any planet is proportional to the cube of the semimajor axis of its orbit.
T2∝r3
Therefore, we can write
r13T12=r23T22
⇒r3(200)2=(4r)3T22
⇒4×4×4200×200=T22
⇒T2=25 days
JEE Main 2024 — Physics Mechanics
A planet takes 200 days to complete one revolution around the Sun. If the distance of the planet from Sun is reduced to one fourth of the original distance, how many days will it take to complete one revolution?
Held on 29 Jan 2024 · Verified 6 Jul 2026.
25
50
100
20
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