You Do Need power plug adapter while traveling from Vanuatu to India.

Here is Why You Need An Adapter

The outlet and plug type used in India are C, D and M and in Vanuatu is I. This is how they look like.

In Vanuatu, outlets of type I are in use.

Type I

In India, outlets of type C, D and M are in use.

Type C

Type D

Type M

I am from

going to