As far as I know, it is not possible. A public interest petition should be filed by the applicant. The court cannot convert suo motu into PIL. An interesting question, sreenath. I am also curious to know the correct answer from the learned people.
You have to understand there is no obligation for me to respond to all of the postings of every member here, Ram sir. Let me humbly reply you that I have never kept silent when I feel I could respond to a specific query.
This query is from a student like me and I felt to say what I thought correct. I would not do the same for a query which requires expertise to answer, me being a student and specially when I am not sure of the answer.