It depends on the type of visa he got. Here is ONE EXAMPLE:
Entry Visa - Indian Consular Fees
These consular fees were generated on 11/15/2010 6:40pm EST.
On June 1, 2010, the Embassy of India updated the requirements for former Indian Nationals.
Per requirements of the Indian Ministry of External Affairs, an Entry visa is granted in the following circumstances:
•Applicant is a person of Indian Origin, defined as a person who has held Indian nationality, or a child or grandchild of a person who has held Indian nationality.
•Applicant is a spouse or child of a person of Indian origin.
•Applicant is a spouse or dependent family member of a foreign national coming to India on long term visa such as Employment, Business, Research or Student. In such cases, the visa duration granted is co-terminus with the period of the principal visa holder.
Please note the visa is valid beginning on the day it is issued. So a 6 Month visa issued on January 1 would be valid until June 30.
etc........................
