Dear Dimpi,

Yes,  you can definitely register for CA CPT exam after 10th but you can appear for it only after completion of your 12th. At the time of application the applicant needs to pay online a sum of Rs.6100 . You will also get study material delivered by ICAI at your address. Hope this might help you.  

Dear Dimpi,

Yes, you can register for CPT exam after completing your 10th class but you can appear in your exam after completing your 12th class.

To know in detail you can also refer below link

https://finance.careers360.com/articles/ca-cpt

Good Luck!!