Question

What should be the duration of year if the distance between the sun and the earth gets doubled the present distance?

Answer 1

$T^2\alpha R^3$

If r get double$\Rightarrow R_2=2R_1$

$\frac{T_2}{T_1}=(\frac{R_2}{R_1}{)}^{\frac{3}{2}}=2^{\frac{3}{2}}$

$\Rightarrow T_2=\left(2\sqrt{2}\right)T_1=\left(2\sqrt{2}\right)365days=1032days$