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Hi kapurpranay,
The best pass depends on all of your travel plans combined, so including day trips from Lucerne and Paris, and including your outbound trip from Lucerne. Once you have a list of plans you can find the best pass as explained here.
In general I can say that an 8-day Swiss Travel Pass might be a very good option. If you have one, you only need a ticket from Paris to Basel (Swiss border), as the Basel – Lucerne leg is covered by the pass. The Tell-Pass could work if you only plan to do local trips.
Please see the above links and feel free to let me know if any questions remain.