Question

Can someone please help me with this?

Answer 1

Explanation:

F1=9×10^9×Q×3Q/r^2 .......(1)

F2=9×10^9×Q×2Q/r^2 ........(2)

on dividing eq. 1 by 2

i.e. F1/F2=9×10^9×Q×3Q/r^2 /9×10^9×Q×2Q/r^2

F1/F2=3Q/2Q

So,

F1/F2=3/2

The write answer is option (b)..