Yes you can file the divorce at Bangalore,if Bangalore is the last residing place living together as husband and wife .More than Six month will take a decree under Mutual divorce petition from the court. One year separation period is need for filing mutual divorce petition.
Steps in Court Procedure (13 B)
In all there are two court appearances in a mutual divorce
1. First A joint petition signed by both parties is filed in court. Secondly In the first motion statement of both parties are recorded and then signed on paper before the Honourable Court.
2. Thirdly The 6 month period is given for reconciliation, (the honourable court gives a chance to the couple to change their mind)
3. Fourthly 6 months after the first motion or at the end of the reconcile period if both parties still don't agree to come together. Then the parties may appear for the second motion for the final hearing.
4. Divorce decree will be granted as the Honourable Court may deem fit.