Question

Statement I: The electric field due to a very small dipole at a large distance from its centre along its axis is $\frac{2\overrightarrow{P}}{4\pi {\epsilon }_0{r}^3}.$
Statement II: Coulomb’s inverse square law is not valid in case of electric field due to a dipole.

• A. Statement I – True
  Statement II - True
• B. Statement I – True
  Statement II - False
• C. Statement I – False
  Statement II - True
• D. Statement I – False
  Statement II - False

Answer 1

The correct option is B Statement I – True

Statement II - False
Though it may not look like as inverse square relation (because of the $r^3$ in denominator) but it has been derived from Coulomb’s law (which is inverse square) but assumptions have been made neglecting the separation between the charges as compared to the distance of point of calculation of electric field, which makes it look so weird!