From this year the JEE (Main) 2014 application has been made completely online i.e. the candidate have to fill the particulars online and also upload their photograph, signature and thumb impression. There is no requirement for sending Physical copy of Application Forms to JEE Main Board.
Considering this it is most important to fill up the online application form error free, else you have to wait till January to get an opportunity to rectify the JEE Main 2014 Online Application Form.
The online submission of particulars, uploading of scanned photograph, signature and thumb impression may be made at JEE (Main) 2014 website.
Technical Specification of the Photograph:
It should be in JPEG format, size 4KB to 100KB and dimension 3.5cm x 4.5cm.
Please use this exact format else it may be rejected by the system. Once ready with the photograph the date of taking photo should be there at the bottom (any recent date within 30 days) of the photo. Photo should be recent one (say 30 days) and you should keep 6/8 copies with you for future requirement. While scanning see the photos taken good clarity and check it before uploading.