Are you talking about P3 or P4...
Sorry, message was not clear whether you are talking about P3 or P4..
> According to my understanding we do not need to send any documents other than DS-230 part 1. is this right ?
> We dont need to send the photographs either. is that right ?
You don\'t need to send any documents as part of P4, you need to carry them all for your interview.
If you are about to send P3, then you need to send DS-230 part1 along with other docs, more info immihelp.com
> 1. Do we need to fill two DS-230 part-1 forms for two of us (myself and my wife ) ?
Yes, this is biographic data form. So each one should fill a separate one.
> 2. On the top of the form there are some instructions which say, this form when put together with DS-230 part -II is complete
> application for immigrant visa and alien registration. But I did not get any DS-230 part-II form in the application packet. Will we be
> getting this part-II at the time of interview ?
All P4s send to Indian address will have this forms. But P4s sent to US address will not have any forms other than appointment
letter. So, you need to fill (but don\'t sign) one DS230 for each family member and carry them for the interview.