Hi Uttam,

JEE mains paper is conducted twice a year one in January and one in April. Students can give both the papers and only one also at if they give both the papers in the best of the two is chosen at according to that result you are given college. Best of the two is chosen. It does not depend upon that whether you have given JEE Main paper 1 or not. If you will gain more percentile in JEE Main paper 2 then and that percentile would be considered as your result.

I hope you got the answer.

All the best for your future!