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!
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