Yes, he/she can apply again even if they have qualified the minimum cut-off passing criteria for the TET examination as the recruitment process of a teacher is totally merit-based and if the candidate has scored more marks in the TET examination that means he/she just has to score a decent amount of marks in the written examination to be able to be considered in the final merit list which ends up becoming easy as the candidate doesn't need to fear about his/she marks in the TET examination and totally concentrate on the written examination.