'N' point charges are distributed into two groups and separated by a fixed distance. Then the ratio of…

'N' point charges are distributed into two groups and separated by a fixed distance. Then the ratio of maximum to minimum forces between the two groups is $(\mathrm{N}$ is even and greater than 2). Options :
  1. $\frac{(\mathrm{N}-1)^2}{4 \mathrm{~N}^2}$
  2. $\frac{4 \mathrm{~N}^2}{\mathrm{~N}-1}$
  3. $\frac{\mathrm{N}^2}{4(\mathrm{~N}-1)}$
  4. $\frac{2 \mathrm{~N}^2}{\mathrm{~N}-1}$

Solution

No solution. Refer to answer key.

Asked in: AP EAMCET 2017 (26 Apr Shift 2)

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