1, What is the definition of "minor"? 18 years old? or 21?
2, If my adopted child live in his school for weekdays, but stay in my home each weekend, does this qualify for "phisical custody"?
be aware that visa officers look very carefully at adopted children. the children's parents must be documentably dead, or severely incapacitated in order for the children to gain immigration benefits thru adoption. high fraud countries are examined especially thoroughlty in such cases. if not, then just about everybody immigrating thru marriage or other means would have "several adopted children".