I am sharing alink which states what method they shall apply in case of a tie.

For JIPMER , check page number 19.

For AIIMS, METHOD OF RESOLVING TIES

The overall merit / ranking shall be based on the Percentile scores.
The method adopted for breaking ties (similar Percentiles) shall be:
(i) Candidates obtaining higher aggregate marks in all the MBBS/BDS Professional Examinations shall be placed higher than candidates with lower aggregate marks in MBBS/BDS Professional Examinations.
(ii) In case there is still a tie, after step (i) above, according to age (Date of birth), the older candidate shall get preference over the younger one.

All the best!