You should give the full name of your parents without their initials. 

 

As for Aadhar, do use the name given in Aadhar. 

 

Usually the father’s name is printed in the admit card and thus, they match your id(like aadhar where there is father’s name) as an additional security measure. 

 

So, try to fill the name as per Aadhar

Try for looking for your birth certificate if it has parents name.

If not. 10 admit card or hall ticket or registration something will have parents name.

If not then 12 u take into consideration. Apart from.this check the details in aadhar and fill as per it. The recent accepted individual identification is Aadharwhich is valid.