Q. submit an affidavit mentioning why my Date of Birth in license is different from the one in my Passport ?
A. affidavit cannot be given for other's act/work. affidavit always given in support of the person who makes himself bound by the statement given in affidavit.
you should state in affidavit all the facts regarding the documents bearing your correct DOB and aver that
1. all the requisite documents were given to the concerned authority at the time of issuing of licence.
2. error may be caused by the issuing authority.
3. it is a clerical error and needs to be correct.
4. there was no prejudice at the time of application of said licence.
you cannot give affidavit in respect of error made by the RTO. it is responsibility of the RTO to issue DL with correct information. your only liability is to furnish requisite documents. therefore affidavit should be given in support of the fact that all the requisite documents were given and there was no prejudice to get DL with wrong DOB.