If you want to study in India, you will need to apply for a Student (S) Visa or a Research (R) Visas at the Indian consulate in your home country. Student visas are normally issued to undergraduate and graduate students and are either multiple-entry or come with a fixed number of entries to allow for home visits or emergencies. You’ll need to submit your passport, passport photos, and proof of address, as well as a letter of admission from a bona fide educational institution. You’ll also require documented proof that you have adequate funds to finance your stay in India. Student visas take anywhere from one day to a couple of weeks to process, depending on your jurisdiction.
Research visas are issued to scholars, doctoral students, and other academic researchers, including those coming to India to attend conferences and seminars. You will need to submit details of where you plan to visit, details of previous visits, evidence of funds for the trip, and proof of your admission to a recognized educational institute (originals must be submitted). You’ll also need to furnish seven copies of a proforma (available from the visa office) outlining your academic background and details of your research project. If you are traveling to India to attend a workshop or seminar or if you are a visiting scholar sponsored by an Indian university, you’ll need to submit a letter of invitation from your sponsoring body.
Research visas can take a long time to process, so it’s advisable to apply for your visa at least six weeks before you plan to leave for India. Spouses and dependents of students and researchers should apply for Entry (X) Visas. Marriage and birth certificates must be submitted in case of spouses/dependents.
For more information on visas, visit: http://www.boi.gov.in.