MCQ
The earth revolves round the sun in one year. If the distance between them becomes double, the new period of revolution will be
- A1/2 year
- ✓$2 \sqrt{2}$ years
- C4 years
- D8 years
✓
Answer
Correct option: B.
$2 \sqrt{2}$ years
(b) $\frac{T_2}{T_1}=\left(\frac{r_2}{r_1}\right)^{3 / 2}=(2)^{3 / 2}=2 \sqrt{2} \Rightarrow T_2=2 \sqrt{2}$ years.
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