If the radius of earth's orbit is made 1/4, the duration of an year will become

Options

A. 8 times
B. 4 times
C. `1//8` times
D. `1//4` times

Answer

B

Explanation

As `T_(2)T_(1)(r_(2))/(r_(1))^(3//21)=T_(1)(1/4)^(3//2)=1/8` times