Hello Tappu

Yes you are eligible to give NSEP (National Standard Examination in Physics) through enrollment in NIOS even after clearing your class 12th with 93%.

And it will not affect your boards percentage as both the things are independent of each other.

So you could enroll in NIO and give NSEP without any hesitation.

To know more about NSEP: NSEP by Careers360

Hope this answer helps! Thank You!!!