Eviction of tenant post the agreement

I own 2 flats in Mumbai, I reside in one and rented out the other. I have made 11 months Leave & Licence agreement with the tenant and it is notarized (not registered). Now I would like to know the following things :-

1) Validity of this notorized agreement ?
2) If the tenant continues to live in the flat after 11 months (after expiry of agreement), Can I take help from local police to get the possession of rented-out flat ?
3) what other steps should I take to get the possession of flat if the tenant refuses to vacate the flat after 11 months (after expiry of agreement)?