A satellite is moving round the earth. In order to make it move to infinity its speed must be increased by

20.7% 41.4% 82.8% it is not possible to do so

41.4%

$v=\sqrt{\frac{G M}{r}}$  &  $v_e=\sqrt{\frac{2 G M}{r}}$ $\frac{v_e-v}{v}=\sqrt{\frac{2 G M}{r}}-\sqrt{\frac{\frac{GM}{r}}{\frac{GM}{r}}}$ $=\frac{\sqrt{2}-1}{1}$ = 0.414 or 41.4%