Gravitation Question 305

Question: If the earth is at one-fourth of its present distance from the sun, the duration of the year will be

Options:

A) half the present year

B) one-eighth the present year

C) one-sixth the present year

D) one-tenth the present year

Show Answer

Answer:

Correct Answer: B

Solution:

  • $ [\frac{T_{1}^{2}}{T_{2}^{2}}=\frac{r_{1}^{3}}{r_{2}^{3}}={{\left( 4 \right)}^{3}}] $ $ [\therefore T_{2}=T_{1}/8] $


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