Two charges Q1 and Q2 are separated by a distance d'' and exert a force f'' on each other?

Question

What would happened if Q1 and Q2 were cut in half? 1) 1/4F 2) 0 3) 3F, 4) 2F, 5) 1/2F

Answer 1

F1 = k*Q1*Q2/R^2
F2=k*(Q1/2)*Q2/2)/R^2

F2/F1 =

k*(Q1/2)*(Q2/2)*R^2
-------------------------
k*Q1*Q2*R^2

The letters all cancel out, leaving:
(1/2)(1/2)/1