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Dear Aniket,You can do one thing, send it too adding the reference to your JEE Application Form No. and an application. Also call the JEE office of your zone and tell them the same. They could assist you with the appropriate information.Although sending the attested photocopy doesn't really matter at this stage. If you get selected, they'll ask for it again. And then you can provide them with the necessary documents at the time of counseling.
But again to remain on the safer side, sending the attested photocopy again would be a good option indeed.All the best !!!Regards,Askiitians ExpertsHimanshu Geed