The maximum and minimum distance of a comet from the sun is `8 xx 10^(12) m and 1.6 xx 10^(12) m ` . If its velocity when nearest tot he sun is 60 m/x what will be its velocity in m/s when it is farthest

Options

A. 12
B. 60
C. `1 : 32`
D. `1 : 2 sqrt(2)`

Answer

A

Explanation

According to conservation of angular momentum
`mv_("min") r_("max") cc (r_("min"))/(r_("max")) = 60 xx (1 . 6 xx 10^(12))/( 8 xx 10^(12)) = 12 m/s `