Does adsense has any restriction on min number of traffic that a site must host in order to get qulified or eligible for adsense. I.E what should be min no. of visitors.
I don't believe there's a requirement. Many people who start up a blogger account and then apply to Adsense probably have no clue as to how many visitors they receive. As long as the site has good content, I think that's about all that really matters.