Q. If the radius of earth’s orbit is made 1/4$^{th}$ ,then duration of an year will become
A) 8 times
B) 4 times
C) 1/8 times
D) 1/4 times
Explanation
(c) $T_{2} = T_{1}\left( \frac{r_{2}}{r_{1}} \right)^{3/2} = T_{1}\left( \frac{1}{4} \right)^{3/2} = \frac{1}{8}\ times$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.