hello madhu!! yes you need to get the filled in form application signed by a gazetted officer or by the principal of your college where you have studied.
It is compulsory that you get the application form attested.
Please read other instructions in the link given below :
Https://sche.ap.gov.in/EAMCET/PDF/APEAMCET2019_Important_%20Instructions.pdf
Thank you and all the very best do well!!
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