Answer & explanation
Correct answer: option 3
$\text{We can think of 2q as two charges of charge q each}$
$ \text{Net dipole moment is } P = 2\times qdcos30^o = \sqrt 3 qd$
Correct answer: option 3
$\text{We can think of 2q as two charges of charge q each}$
$ \text{Net dipole moment is } P = 2\times qdcos30^o = \sqrt 3 qd$