The cut off mark will depend on the competition that year. It will also depend on which state you belong to as some states have very high cut off and vice versa. The cut off will also depend whether you want to opt for government medical colleges or private colleges, the former having a significantly higher cut off. 

A score over 400 can get you private colleges but for government medical colleges you need to score 530 minimum (This again varies drastically depending on your state)

All the best!