F1 Visa Interview

I have received teaching assistantship and full tuition waiver for my graduate study (PhD in physics) in USA. Do I still have to show financial proof to the US embassy during my visa interview. If yes then what amount would be appropriate!
I had applied for DV lottery in 2009. Does this can have any negative impact on my profile during interview? How should I reply to this question?
nirmalnischal33
Asked Apr 06, 2013

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