My family and I are going to India for a one week. What visa should I get and how long will the visa be valid?
First, you must make sure that everyone in your family passport has at least 6-months validity and one blank page. Once the passports meet these criteria, now you can apply for a tourist visa. Since your stay will only be a week, you must apply for a 6-months validity visa.
Indian visa can be used for multiple entries. So, if you plan to travel back to India in the next 6-months, you can do so with the same visa.