Gravitation Question 304
Question: If the distance of earth is halved from the sun, then the no. of days in a year will be
Options:
A) 365
B) 182.5
C) 730
D) 129
Show Answer
Answer:
Correct Answer: D
Solution:
- From Kepler’s law of periods, $ [T_{2}=T_{1}{{\left( \frac{R_{2}}{R_{1}} \right)}^{3/2}}=365{{\left( \frac{/2}{{}} \right)}^{3/2}}] $ $ [=365\times \frac{1}{2\sqrt{2}}=129,days] $
