1. The Tax Deductor, the Tahsildar should have issued the Form No.16 (TDS Certificate) to your father (Revenue Inspector) . Now your father can request the Tehsildar to issue him the TDS Certificate in Form No.16. If the Tehsildar does not issue it within 30 days of the request, your father can complain to the Assessing Offiocer- TDS having jurisdiction over the Tahsildar.
2. "Actually my dad was paying income tax by dudction from his salary wihtout using PAN card . He just applied PAn card two days back. can he use this PAN number for the form 16 of last year IT returns form 16.":
The Form No.16 for the last year will not show/bear yor father's PAN, as it had not been given to the Tax Deductor. However your father can use the PAN while filing his return of income for the last year.