No, for the family visa its not required to submit wifes qualification docs.
Xerox copies are required for 6 months family visa not for permanent residency of family visa.
Stamping on original certificates is absolute necessary you can even enquire from embassy of india.
I forgot to add ,also you will need rent agreement and water or electricity bills of last 3 months.
If you living in fully furnished flat a letter from your flat owner and help from your sposor should do