Q. Suppose the law of gravitational attraction suddenly changes and becomes an inverse cube law i.e. $F \propto 1/r^{3}$, but still remaining a central force. Then
A) Keplers law of areas still holds
B) Keplers law of period still holds
C) Keplers law of areas and period still hold
D) Neither the law of areas, nor the law of period still holds
Explanation
The correct answer is Option D: Neither the law of areas, nor the law of period still holds.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.